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213 臺大管理論叢 2018/4 28 卷第 1 213-254 DOI:10.6226/NTUMR.201804_28(1).0006 消費者情緒在九尾數定價效果的影響 e Effects of Consumer Emotion on Nine-Ending Prices 摘 要 過去的研究忽視了情緒處理對九尾數定價效果的影響。在流暢理論的基礎上,研究 1a1b 和研究 2 探討情緒對九尾數定價水準和意象效應的影響,以及在流暢程度做 為中介變數的情況下,情緒對以九尾數定價產品之意象效應的影響。研究結果顯示, 相對於感到悲傷的消費者而言,感到快樂的消費者對於九尾數定價的商品具有較高 的購買意向。研究 3 將情緒的確定性和不確定性對購買九尾數定價物品的數量的影 響進行區分。研究 4 顯示,相對於在單獨評估模式下的消費者,在聯合評估模式下 的消費者受到九尾數定價的影響較小。在情緒與流暢程度對九尾數定價影響的觀點 上,本研究提供了重要的見解。 【關鍵字】流暢、情緒、九尾數定價 Abstract Previous research has ignored the influence of emotional processing on nine-ending price effect. Building on the theory of fluency, Studies 1a, 1b and 2 investigate the influence of incidental emotion on the level and image effects of nine-ending prices and on the effect such prices have on product image under the mediating role of processing fluency. The empirical results of Studies 1a, 1b and 2 demonstrate that consumers who feel happy have higher purchase intention with respect to items with nine-ending prices than do consumers who feel sad. Study 3 distinguishes between the influences of incidental emotional certainty and uncertainty on the quantity of nine-ending priced items purchased. Study 4 shows that consumers are less affected by nine-ending prices under the joint evaluation mode than they are under the separate evaluation mode. These findings provide important insights into the perspectives of incidental emotion and processing fluency on the nine- ending prices. Keywordsfluency, emotion, nine-ending price 鄭尹惠 / 國立台中教育大學國際企業學系教授 Yin-Hui Cheng, Professor, Department of International Business, National Taichung University of Education 莊世杰 / 國立中正大學企業管理學系教授 Shih-Chieh Chuang, Professor, Department of Business Administration, National Chung Cheng University 黃千容 / 真理大學休閒遊憩事業學系副教授 Molly Chien-Jung Huang, Associate Professor, Department of Leisure and Recreation Studies, Aletheia University Received 2013/10, Final revision received 2015/9

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Page 1: 消費者情緒在九尾數定價效果的影響review.management.ntu.edu.tw/paper/1780-P.pdf消費者情緒在九尾數定價效果的影響 216 2. Literature Review 2.1 Inconsistent

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臺大管理論叢 2018/4第28卷第1期 213-254DOI:10.6226/NTUMR.201804_28(1).0006

消費者情緒在九尾數定價效果的影響

The Effects of Consumer Emotion on Nine-Ending Prices

摘 要

過去的研究忽視了情緒處理對九尾數定價效果的影響。在流暢理論的基礎上,研究1a,1b和研究 2探討情緒對九尾數定價水準和意象效應的影響,以及在流暢程度做為中介變數的情況下,情緒對以九尾數定價產品之意象效應的影響。研究結果顯示,相對於感到悲傷的消費者而言,感到快樂的消費者對於九尾數定價的商品具有較高的購買意向。研究 3將情緒的確定性和不確定性對購買九尾數定價物品的數量的影響進行區分。研究 4顯示,相對於在單獨評估模式下的消費者,在聯合評估模式下的消費者受到九尾數定價的影響較小。在情緒與流暢程度對九尾數定價影響的觀點上,本研究提供了重要的見解。

【關鍵字】 流暢、情緒、九尾數定價

Abstract

Previous research has ignored the influence of emotional processing on nine-ending price effect. Building on the theory of fluency, Studies 1a, 1b and 2 investigate the influence of incidental emotion on the level and image effects of nine-ending prices and on the effect such prices have on product image under the mediating role of processing fluency. The empirical results of Studies 1a, 1b and 2 demonstrate that consumers who feel happy have higher purchase intention with respect to items with nine-ending prices than do consumers who feel sad. Study 3 distinguishes between the influences of incidental emotional certainty and uncertainty on the quantity of nine-ending priced items purchased. Study 4 shows that consumers are less affected by nine-ending prices under the joint evaluation mode than they are under the separate evaluation mode. These findings provide important insights into the perspectives of incidental emotion and processing fluency on the nine-ending prices.【Keywords】 fluency, emotion, nine-ending price

鄭尹惠 /國立台中教育大學國際企業學系教授Yin-Hui Cheng, Professor, Department of International Business, National Taichung University of

Education

莊世杰 /國立中正大學企業管理學系教授Shih-Chieh Chuang, Professor, Department of Business Administration, National Chung Cheng

University

黃千容 /真理大學休閒遊憩事業學系副教授 Molly Chien-Jung Huang, Associate Professor, Department of Leisure and Recreation Studies,

Aletheia UniversityReceived 2013/10, Final revision received 2015/9

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1. IntroductionDo consumers always perceive a product or service with a nine-ending price to be

cheaper than one with a zero-ending price? Imagine you go to a shopping mall one afternoon. While you are hanging around the mall, you see a pair of great looking jeans on sale for $35. You think they are cheap and worth it, so buy them immediately. Unfortunately, in the very next store, you find the same jeans you just bought are on sale for only $19. Finding that you have paid $16 too much for your jeans, you feel upset and disappointed. At the same time, you see a pair of great looking sunglasses on sale for $29. Do you still think the sunglasses are cheap and worth buying despite your negative emotions? Does the nine-ending price still attract you? This is a common experience among consumers.

Traditional economic model of financial decision making leaves little room for the influence of emotion. Likewise, price has typically been examined from the cognitive perspective, occasionally with affect implicit in an empirical definition (O’Neill and Lambert, 2001). Affective reactions influence judgment and decision making, even without cognitive evaluations (Zajonc, 1980). Moreover, the emotional aspects can exert a dominating influence on behavior when affective reactions and cognitive evaluations diverge. Although it is clear that emotions are an important aspect of consumer behavior, it is still not much to examine how emotions affect consumer response to price. This research therefore is interested in how consumers process price information such as nine-ending prices when they experience negative emotions such as upset or regret, and whether happy consumers have different price perceptions to those of consumers in a negative emotional state.

Nine-ending prices are defined here as prices set just below even dollar figures, such as $1.99 rather than $2.00. Consumers read prices from left to right and thus are prone to underestimate them (Coulter, 2001), which may affect the likelihood they will purchase a product. Even though the widespread use of setting prices ending in the digit 9, some evidences show that there is significant ambiguity in the effects of nine-ending prices (Bizer and Schindler, 2005; Gedenk and Sattler, 1999). It is suggested that the influence of nine-ending prices effect depends on two factors: the amount of attention that refer to consumers pay to process price information accurately (Schindler and Warren, 1988; Zaichkowsky, 1988) and perceiving nine-ending price information as monetary gain or quality sacrifice of product (Stiving, 2000).

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The former factor of the amount of attention is likely to be affected by a variety of factors such as consumer involvement, motivation, and the opportunity to process price information, including emotion which has been largely ignored in the literature. In the latter factor, emotional states also influences the cognition of nine-ending price information in monetary gain or quality sacrifice because of cognition of events are negatively influenced by negative emotions and positively influenced by positive emotions (Chuang, 2007; Lin, Chuang, Kao, and Kung, 2006). Consumers in positive emotion will view the nine-ending price as monetary gain with high purchase intention, whereas those in negative emotion will view it as quality sacrifice of product with less purchase intention (Stiving, 2000). Therefore, this study attempts to bridge the gap among consumer’s emotion to pay attention to process price information accurately and the cognition of monetary gain or quality sacrifice and their purchase intention for nine-ending price information.

Additionally, emotional certainty also plays an important role in the study of information processing (Tiedens and Linton, 2001). Certainty in one’s emotions gives consumers a high level of processing fluency, whereas uncertainty in one’s emotions induces a low level of processing fluency in consumers because one’s certainty appraisal serves as an internal cue to signal whether further processing is necessary (Yen and Chuang, 2008). Finally, in order to bridge the gap between nine-ending price effect in the experiment and in the real world, separate and joint evaluations are utilized herein for further analysis of this effect based on Hsee’s (1996) evaluability hypothesis. Previous research results are based solely on the separate evaluation of nine-ending and zero-ending prices, while whether the nine-ending pricing effect exists among other conditions remains unknown.

The studies reported in this article therefore attempted to examine the role of emotion in the nine-ending price effect as mediated by processing fluency. The major goal of this paper was to improve our understanding of how valence-based emotional states influence the effect of nine-ending prices under the mediating influence of processing fluency. In Studies 1a, 1b, and 2, positive and negative emotions were manipulated to implement two different induction techniques and explore the effect of emotions on nine-ending price effects in two separate experiments. In Study 3, the appraisal tendency approach (Lerner and Keltner, 2000; Yen and Chuang, 2008) was adopted to test the effects of certain emotional states. Study 4 finally examined the nine-ending effect in the separate and joint evaluations based on Hsee’s (1996) evaluability hypothesis.

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2. Literature Review2.1 Inconsistent Findings on the Nine-Ending Price Effect

Nine-ending pricing involves using number nines on the right-hand side of prices. Previous studies have shown that prices that ended in nines produced higher sales than prices that were slightly higher or slightly lower due to the special psychological effects (Schindler and Kibarian, 1996; Coulter, 2001; Anderson and Simester, 2003; Bizer and Schindler, 2005; Bray and Harris, 2006; Thomas and Morwitz, 2005). The mechanisms of level effects and image effects have been proposed to explain the influence of nine-ending prices (Stiving and Winer, 1997; Schindler and Kirby, 1997).

Level effects refer to potential biases in consumers' price perception and price processing, resulting in an underestimation of the value of a price (Baumgartner and Steiner, 2007). Even though the widespread use of setting prices ending in the digit 9, evidence of the effects of nine-ending prices is mixed. Monroe and Lee (1999) argued that consumer responses are not affected by a slight price change. Gedenk and Sattler (1999) conducted a review of these studies and concluded there is significant ambiguity regarding the effects of nine-ending prices. Although some studies have suggested nine-ending prices have a positive effect and therefore support the level and/or price image explanations, others have not found prices ending in nine have any significant effects, and a few have even found they have a negative effect (Baumgartner and Steiner, 2007). Baumgartner and Steiner (2007) then indicated that there is strong heterogeneity of consumers in their responses to odd and even prices. Some consumers may strongly prefer 9-ending prices, whereas other consumers may favor zero-ending prices.

In sum, the level effect may explain the degree of influence of nine-ending prices only, but does not explain why some studies show opposite results on purchase intentions. The image effects, assuming that the right most digits do have meaning for the customer, then clarify the second possible influence of prices ending in nine. There are two types of image effect: the price image effect and the quality image effect. The price image effect involves the use of nine-ending prices to communicate to consumers that the product is low-priced or on sale, and signals an opportunity to buy the product for less (Schindler, 2006). Research shows that nine-ending prices, especially those ending in 99, communicate a low-price image to consumers (Baumgartner and Steiner, 2007; Schindler and Kibarian, 1996). In contrast, the quality image effect involves the perception of consumers that nine-ending prices are a signal of inferior quality, whereas zero-ending prices may indicate superior product quality (Baumgartner and Steiner, 2007; Stiving,

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2000). Both the perceived gain and underestimated price effects of nine-ending prices make a product seem much cheaper to consumers than if it carried a zero-ending price, and trigger an enhanced buyer response (Baumgartner and Steiner, 2007; Gendall, Holdershaw, and Garland, 1997).

2.2 The Role of Incidental Emotion and Processing Fluency in the Nine-Ending Price EffectPsychological literature shows that emotional state can significantly affect decision

making (Elster, 1998; Isen, 1987; Zajonc, 1980). Emotion allows people to transcend the details and to prioritize and focus on the decision to be made. However, it is not often to see research examines how emotions affect consumer response to price. Price has typically been examined from the cognitive perspective, occasionally with affect implicit (O’Neill and Lambert, 2001). However, consumers do not act by cognition alone, they also use human feelings and emotions to judge prices and transactions and make decisions (Chandon, Wansink, and Laurent, 2000). Actually, theorists recognize that emotion and cognition are interdependent, rather than competing, influences (Simon, 1967).

Emotion can be loosely defined as a physiological state of arousal triggered by beliefs about something (Elster, 1998). An emotion “is experienced as a feeling that motivates, organizes, and guides perception, thought, and action” (Izard, 1991). Emotions are evaluative, rather than purely bodily sensations or cognitive judgments, in that they evoke positive or negative valences that can be described using bipolar scales that define a continuous spectrum from unpleasantness to pleasantness -- for example, unhappy to happy.

However, the influence of emotional processing on nine-ending prices has been largely ignored. Decision making is often intertwined with emotion. Although emotional responses typically are characterized as irrational, it is argued that emotion and rational decision making is complementary (Simon, 1967). Marcus, Neuman, and Mackuen (2000) stated that negative emotion leads to more thoughtful decision making because it engenders increased analytic processing and a low level of processing fluency. Furthermore, the theory of emotional intelligence provides that people tend to use emotions, specifically negative ones, to think deeply about their opinions (Marcus et al., 2000). That is, understanding the roles played by emotion and processing fluency in the context of nine-ending prices may help to clarify the gaps in nine-ending price theory and apply this theory further in practice.

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Emotion can assist in making optimal decisions (Elster, 1998). The literature on emotion and information processing has revealed that positive and negative emotions have asymmetric effects. From a neurobiological viewpoint, emotion facilitates optimal-choice behavior when individual is provided with several courses of action. That is, positive feelings can make it easier to access information in the brain, improve problem solving, enhance negotiation, and build efficient and thorough decision making (Rolls, 1999). Positive affect can influence social behavior (Isen, 1987). Positive mood allows individuals to better organize and assimilate information and facilitates creative problem solving. Ashby, Isen, and Turken (1999) argue that a positive mood enhances individual performance on many cognitive tasks. People’s thoughts are made up of images which are marked by positive or negative feelings that are linked to bodily states (pleasant or unpleasant) (Ackert, Church, and Deaves, 2003).

Besides, cognitive effort plays an important role in most explanations of the nine-ending price effect, which assume that heuristic process involving mental effort occurs during the price evaluation process. Schindler and Warren (1988) found the effect of nine-ending prices depends on the amount of attention the consumer pays to the purchase decision. Some studies have concluded that people are more likely to rely on a simplified leftmost-heuristic to judge nine-ending prices under a high cognitive load (Stiving and Winer, 1997; Coulter, 2001; Schindler and Chandrashekaran, 2004).

Studies of cognitive effort have made a contribution to the literature by identifying the importance of processing fluency for nine-ending prices. Mazzoni and Nelson (1998) found the fluency of processing can be perceived via an internal meta-cognitive feedback mechanism (Metcalfe and Shimamura, 1994). This feedback mechanism may deem processing fluency to be a signal to other processing modules including the emotion system (Fernandez-Duque, Baird, and Posner, 2000).

Cognitive processes may mediate the effect of feelings on social behavior (Isen, 1987). The mediating role of processing fluency in both the level effect and the image effect can therefore be summarized as follows: consumers experiencing positive emotions are expected to have greater purchase intention than those experiencing negative emotions because positive emotions result in a higher degree of processing fluency than do negative emotions. I then proposed the following hypotheses on the basis of the foregoing discussion.H1: Nine-ending prices will trigger a greater purchase intention than zero-ending

prices among people in a positive emotional state, compared to those in a negative emotional state.

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H2: Processing fluency mediates the influence of incidental emotion on the nine-ending price effect.

2.3 Emotional Certainty and Nine-Ending Price EffectVarious literatures indicated that certainty might be related to processing, certainty

become a particularly interesting dimension of emotions to examine consequently. Previous research has argued that certainty and uncertainty have played important roles in the study of information processing (Tiedens and Linton, 2001). Although prior research has primarily examined positive and negative emotions, researchers have also found that valence (i.e., positive vs. negative emotional states) alone cannot explain the relationship between emotional states and judgment (e.g., Yen and Chuang, 2008; DeSteno, Petty, Wegener, and Rucker, 2000; Tiedens and Linton, 2001). Recent research suggested that emotions of the same valence may differ in their information processing (Tiedens and Linton, 2001) and cognitive dimensions (Smith and Ellsworth, 1985). Experiencing some emotions is reliably associated with certainty–uncertainty appraisal (Smith and Ellsworth, 1985). People engage in more systematic processing when in negative emotional states, whereas people in positive emotional states engage in more heuristic processing (Tiedens and Linton, 2001).

This paper presents the certainty–uncertainty appraisal dimension and how emotion processing takes place. Identifying differences in the intensity of an emotion, such as contentment, happiness, anger, or disgust, is associated with feelings of certainty, characterized by understanding what is happening in the current situation and feeling able to predict what will happen next. Other emotions, such as fear, worry, and hope, surprise would be associated with feelings of uncertainty, characterized by not understanding what is happening and feeling unsure about what will happen next (Yen and Chuang, 2008; Smith and Ellsworth, 1985; Tiedens and Linton, 2001).

Positive mood leads to heuristic rather than systematic processing because it provides a sense of subjective certainty (Martin, Ward, Achee, and Wyer, 1993). People engage in more effortful processing when the actual level of certainty is below the desired level, because one’s certainty appraisal serves as an internal cue to signal whether further processing is necessary (Chaiken, Liberman, and Eagly, 1989; Tiedens and Linton, 2001; Yen and Chuang, 2008).

Extending this reasoning and suggest more broadly, I therefore assume that certainty emotional dimension is another important factor determining the role of emotions in the

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magnitude of the ending-price and purchase intention. Certainty in one’s emotions gives consumers a high level of processing fluency, whereas uncertainty in one’s emotions induces a low level of processing fluency in consumers. According to the argument outlined above, this study predicted that a more significant nine-ending price effect would emerge when consumers were more certain of their emotional state than when they were more uncertain of their emotions. H3: Nine-ending price will trigger a greater purchase intention than zero-ending

prices among people in a certain emotional state, compared to those in an uncertain emotional state.

2.4 Evaluation Modes, Emotions, and Nine-ending Price EffectAlthough previous research support for the effect of nine-ending prices on purchase

intention, the results are based solely on the separate evaluation of nine-ending and zero-ending prices, and whether the nine-ending pricing effect exists among other conditions remains unknown. Hence, based on Hsee’s (1996) evaluability hypothesis, separate and joint evaluations are utilized herein for further analysis of this effect.

The evidence of the effectiveness of nine-ending pricing from prior studies has significant experimental value; however, the models used are inconsistent with real-life consumer evaluation settings. In the real world, the target prices of two products are more often directly compared side by side (e.g., product prices printed on direct mail [DM], displayed on in-store shelves, and disseminated on the Internet). Nine-ending and zero-ending prices are mostly evaluated separately in experimental designs, whereas they are generally evaluated side by side by consumers during actual in-store purchasing. This difference in the form of evaluation creates a gap between theoretical results and reality. Moreover, the realistic mean of an evaluation model is commonly excluded from experimental models. The use of different evaluation modes might therefore help clarify the nature of the relationship between emotions and the nine-ending price effect in the real world. Consequently, it become important that the development of new evaluation models that examines the nine-ending pricing effect from a practical purchasing perspective.

Separate evaluation (SE) refers to the condition where two stimulus options are separately presented and evaluated, while joint evaluation (JE) refers to the condition where two stimulus options are presented and evaluated side by side at the same time (Goldstein and Einhorn, 1987). These evaluations are utilized to argue against normative decision theories, which suggest that, regardless of the way preferences are elicited,

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people’s preferences remain unchanged, whereas in reality, people may display different, or reverse, preferences within two normatively equivalent evaluation conditions (Hsee, 1996). Stimulus options that are hard to evaluate (greater uncertainty) independently (SE condition) become relatively easier to evaluate (less uncertainty) when they are presented together (JE condition). Hence, in the SE condition, as nine-ending and zero-ending prices are presented and evaluated independently, there is no comparison target for each price, which increases the level of uncertainty involved, as people can rely only on their mental interpretations of the prices. Consequently, they are more likely to be influenced by the left-digit effect, which results in the underestimation of the perceived value of the nine-ending price through converting the numerical digits of both prices into magnitudes, and the difference between the allocated positions of nine-ending and zero-ending prices on an internal analog magnitude scale will be significant.

In the JE condition, however, as nine-ending and zero-ending prices are presented and evaluated simultaneously, the two prices are comparison targets for each other, which greatly reduce the level of uncertainty. People perceive that the minor difference in the ending digits (i.e., one cent/dollar difference) caused the difference in the leftmost digits between two prices. Although they still perceive the price digits as a whole, or an analog representation, on a mental analog magnitude scale, the magnitude perception determinant of the prices is no longer anchored by the difference in the leftmost digits, and the difference between the allocated positions of nine-ending and zero-ending prices on the analog magnitude scale will be very insignificant, which will diminish the influence of the difference in the leftmost and ending digits between nine-ending and zero-ending prices.

Additionally, the separate and joint evaluation modes also have an obvious influence on processing fluency. According to Bettman and Kakkar’s (1977) information format hypothesis, the format in which information is given has a great influence on information processes (Kleinmuntz and Schkade, 1993; Schkade and Kleinmuntz, 1994). This study therefore inferred that the SE and JE modes may affect consumers’ judgment and decision-making processes. Consistent with the change-process theory developed by Mellers, Chang, Birnbaum, and Ordóñez (1992), their findings show that the preference between price and rating can be reversed by many factors such as how information is displayed and the demand of cognitive effort (Garbarino and Edell, 1997; Payne, 1982). It was therefore reasonable to predict that people make more effort to judge difficult-to-evaluate attributes in the JE condition when comparing them to easy-to-evaluate attributes simultaneously. In other words, making a decision in the JE mode will lead consumers to

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experience a lower level of processing fluency than that experienced in the SE mode. The foregoing discussion led us to infer that consumers with positive emotions would be affected more significantly by nine-ending prices than would those with negative emotions under the separate evaluation mode, whereas there would be no difference in the strength of the nine-ending price effect between consumers with positive emotions and consumers with negative emotions under the joint evaluation mode. The foregoing discussion led to the following hypothesis.H4: People with either positive or negative emotions are more affected by nine-

ending prices in the SE condition than in the JE condition.

3. MethodologyFour studies were employed step by step throughout the research by experimental

design to examine the role of emotion in the nine-ending price effect as mediated by processing fluency. Study 1a and 1b first examine the perception of nine-ending prices as a function of incidental emotion to trigger a greater purchase intention, namely, the happier the consumer, the higher purchase intention. Meanwhile Study 1b and further Study 2 examine the mediating role of processing fluency between incidental emotion and purchase intention. Study 3 extends the investigation to examine the mediating role of emotional certainty on processing fluency in order to know whether the positive and negative emotions have the same influence on nine-ending price effect. Finally, Study 4 examines the nine-ending price effect under separate and joint evaluations to bridge the gap between the experiment and the real world.

3.1 Study 13.1.1 Study 1a

Study 1a tested H1 and investigated whether prices ending in different digits (the rightmost effect) induce different purchase intentions in consumers experiencing positive/negative emotional states with high/low levels of processing fluency. This study hypothesized that the effect of nine-ending prices on purchase intention is a function of emotion based on processing fluency, and that this effect is more pronounced for positive emotions than it is for negative emotions.Participants and Design

Study 1a used a 3 (emotion: positive, neutral and negative) x 2 (digit: nine, zero) between-subjects designs with four different products to test the rightmost effect. Our

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sample of 480 undergraduate university students from a large southern university (264 females and 216 males with a mean age of 20.9 years and aged between 18 and 24) were randomly assigned to one of the conditions and were paid $5 for their participation.Pretests and Stimuli

A pretest was conducted with 87 participants to develop the experimental stimuli (the pretest participants were excluded from the four main experiments). The pretest showed a moderate level of consumer familiarity with the chosen products (notebooks, pens, batteries and baseball caps), with minimum variance. Based on the pretest results, this study gathered products from the market as experimental stimuli so the experiment would better reflect actual market conditions.Stimuli

The stimuli for the study were batteries, pens, notebooks and baseball caps. Each participant was asked to view advertisements showing the regular price ($2, $4, $6, $8) and the promotional price. The promotional prices were manipulated to end in either zero ($1.60, $3.60, $5.60, $7.60) or nine ($1.59, $3.59, $5.59, $7.59). The experimental designs are all shown in Table 1. Emotion Induction

The emotion induction method used to manipulate the emotions and memories of the participants in the two groups was first adapted from the processes carried out by Smith and Ellsworth (1985), with the same procedure being followed for the inducement of positive (happy) and negative (sad) emotions. The participants in the control group were not manipulated in either a positive or a negative way. During the emotion induction procedure, the participants were initially asked to recall a past experience or event that activated a particular emotion (happy or sad), after which six general questions about that particular experience were asked. For example, the participants were told the following to induce happiness.

I want you to think of a past situation or event during which you felt happy. Picture this situation in your mind. Try to remember as vividly as you can what this past pleasant situation was like: think of what happened to make you feel happy, and what it felt like to be happy in this particular situation. Tell me when you are ready and have this pleasant situation in your mind, and I will ask you questions about it.

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Table 1 Stimuli Used in All StudiesNine-ending Condition ($) Zero-ending Condition ($)

Study 1aBatteries (target price)Batteries (regular price)Pens (target price)Pens (regular price)Notebook (target price)Notebook (regular price)Baseball caps (target price)Baseball caps (regular price)

1.592.003.594.005.596.007.598.00

1.602.003.604.005.606.007.608.00

Study 1bNotebook (target price)Notebook (regular price)

4.996.00

5.006.00

Study 2Notebook (target price)Notebook (regular price)

5.596.00

5.606.00

Study 3Notebook (target price)Notebook (regular price)

5.596.00

5.606.00

Study 4Notebook (target price)Notebook (regular price)

5.596.00

5.606.00

After the participants had been introduced to the foregoing scenario and had recalled the situation after a few minutes, they were asked the following series of questions about the experience.1. Please describe this past pleasant situation to me. What was it like to be happy in this

situation?2. What happened in this situation to make you feel happy?3. Why did these things make you feel happy?4. How did you know that you were happy in this situation?5. What did it feel like for you to be happy in this situation?6. What did you do in this situation when you were happy?

The subjects in the neutral condition were asked to describe in detail what their typical day is like and the activities they undertake on a routine day. Immediately after the emotion induction, the participants were asked to answer two questions taken from Smith and Ellsworth’s (1985) study which were designed to assess the pleasantness of a recalled

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experience: “How happy are you now when writing about the situation?” and “How enjoyable do you now find it writing about the situation?” These two items rated on a 7-point scale (1 = not at all, 7 = extremely) showed an adequate degree of internal consistency (α = .88) and were averaged to provide the measure for perceived happiness.

After the emotion induction procedure had been completed, the participants were all asked to respond to questions about the attractiveness of the transaction values of the stimuli.Procedure

Our research method was based on that of Thomas and Morwitz (2005). To encourage their participation in the study, subjects were asked to answer a question during a purchase event. When they came to the laboratory, an experimenter told them they would be engaged in a number of brief tasks. The experimenter then introduced the decision task, which the participants completed at their own paces.Dependent Variable

The participants were asked to rate their purchase intention on a 7-point Likert-type scale ranging from 1 (not at all probable) to 7 (very probable). Two questions were “How probable is it that you may purchase the battery/pen/notebook/baseball cap?” and “Will you actively seek out the battery/pen/notebook/baseball cap in a store in order to purchase it?”Results

All of the participants in the positive emotional condition group were happier than those in the control group for all four different products (batteries: M = 5.13, SD = .89 versus M = 4.21, SD = .81, respectively; t = 6.52, p < .01; pens: M = 5.11, SD = 1.02 versus M = 4.18, SD = .75, respectively; t = 6.38, p < .01; notebooks: M = 5.27, SD = .98 versus M = 4.12, SD = .71, respectively; t = 7.74, p < .01; baseball caps: M = 5.22, SD = .97 versus M = 4.22, SD = .80, respectively; t = 6.69, p < .01), and the participants in the control group were happier than those in the negative emotional condition group (batteries: M = 4.21, SD = .81 versus M = 3.28, SD = .67, respectively; t = 6.17, p < .01; pens: M = 4.18, SD = .75 versus M = 3.22, SD = .63, respectively; t = 6.28, p < .01; notebooks: M = 4.12, SD = .71 versus M = 3.25, SD = .65, respectively; t = 5.79, p < .01; baseball caps: M = 4.22, SD = .80 versus M = 3.28, SD = .65, respectively; t = 6.20, p < .01). Apart from a simple main effect whereby the emotion induction significantly influenced the respondents’ ratings of their happiness (batteries: F(2, 114) = 18.52, p < .01; pens: F(2, 114) = 20.88, p < .01; notebooks: F(2, 114) = 17.93, p < .01; baseball caps:

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F(2, 114) = 21.22, p < .01), there was no significant interaction or main effect among incidental emotions and the levels of happiness, the price-ending digits, and the four products (all F values < 1.29, all p values > .26). That is, there was no confounding effect between incidental emotions and nine-ending digits, and the results confirmed the effectiveness of the induction of different emotional states.

This research hypothesized that the purchase intention differential between a nine-ending price and a zero-ending price would be greater for individuals in a positive emotional state than for individuals in a negative emotional state. A two-way ANOVA was employed to investigate the effects of nine-ending prices and emotion on purchase intention. Among the results for the four products shown in Table 2, I explained only those for batteries in which the main effect was the nine-ending price effect (F(2, 237) = 5.56, p < .05), indicating that the nine-ending price induced a greater purchase intention (M = 4.29, SD = 1.35) than did the zero-ending price (M = 3.95, SD = .92). This finding is consistent with previous evidence of the nine-ending price effect (Schindler and Kirby, 1997; Stiving and Winer, 1997; Thomas and Morwitz, 2005).

Moreover, the analysis revealed a significant interaction effect between incidental emotion and the nine-ending price (F(2, 234) = 6.91, p < .01). That is, H1 was supported by evidence from participants in the first emotion induction condition. Planned contrasts showed that the nine-ending price had a greater effect (M = 5.54, SD = .76) on purchase intention than that exerted by the zero-ending price (M = 4.61, SD = .62) (t = 4.97, p < .01) for participants in the positive emotional condition, with similar results for those in the neutral emotional condition (M = 4.30, SD = 1.09 versus M = 3.61, SD = .91, respectively; t = 3.14, p < .01). In contrast, the negative emotional condition resulted in the nine-ending price having less of an effect (M = 3.03, SD = .86) on purchase intention than that exerted by the zero-ending price (M = 3.63, SD= .94) (t = 2.02, p < .05). It is therefore likely that the nine-ending price effect is stronger when the consumer is in a positive emotional state and is weaker when the consumer is in a negative emotional state.Discussion

The experimental results support our hypothesis that consumer perceptions of nine-ending prices are a function of incidental emotion, as happy consumers had a higher purchase intention than sad ones.3.1.2 Study 1b

To extend the generalizability of our findings to the influence of emotion on the nine-ending price effect, Study 1b first explored the leftmost digit and its effect on the

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臺大管理論叢 第28卷第1期

Tabl

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of S

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5.54

4.

61

4.30

3.

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3.03

3.

63

5.56

<

.05

6.91

<

.01

xx

batte

ries

5.47

4.

55

4.32

3.

72

3.11

3.

73

5.43

<

.05

6.44

<

.01

xx

note

book

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60

4.52

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18

3.78

2.

96

3.74

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88

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57.

28

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1x

x

base

ball

caps

5.43

4.

70

4.35

3.

65

3.08

3.

58

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494.

454.

393.

493.

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669.

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perception of price. Thomas and Morwitz (2005) suggested consumers do not notice slight price changes, and other studies have shown that consumers perceive prices with a lower left digit as significantly lower prices than those with the same left digit (e.g., $6 or $5.99 versus $5.60 or $5.59). The left-digit effect refers to the “observation that using a nine ending versus a zero ending, for example, $2.99 versus $3.00, changes the leftmost digit” (Thomas and Morwitz, 2005). Dehaene (1993) pointed out that numbers extend from left to right. Given this left-right orientation (Coulter, 2001), the leftmost digit is the first number consumers read. If the number order were reversed, then the left-right orientation would presumably disappear (Coulter, 2001). We therefore examined whether emotion moderates the nine-ending price effect when the leftmost digit changes to a lower number. A further prediction made in Study 1b was that consumers experiencing positive emotions process pricing information with a high level of fluency and are more likely to read prices from left to right when a nine-ending price changing the leftmost digit is used. That is, consumers experiencing a positive emotion are more likely to perceive nine-ending prices as lower prices than prices one cent higher when the leftmost digit changes to a lower number (e.g., $5.00 versus $4.99) relative to consumers experiencing a negative emotion inducing a low level of processing fluency.

Second, it is possible that the effect of incidental affect is primarily caused by the involuntary reaction of participants to stimuli rather than by objective evaluation (Forgas and Ciarrochi, 2001). For example, the recollection of positive or negative events used to induce incidental affect may produce self-enhancing motivations in participants, in addition to inducing affective change (Sedikides, 1995). To show that the nine-ending price effect is affected by emotion rather than by other variables, Study 1b therefore tested the hypothesis by employing an emotion induction method that was different from the method used in Study 1a and had been employed successfully by Forgas and Ciarrochi (2001) and Adaval (2003) to elicit the expected emotions. This approach has been applied in other studies to triangulate emotional effects (Forgas, 1995) because most emotion induction methods tend to have unintended cognitive and motivational consequences. It was desirable to use different procedures in a series of related experiments to establish that the observed effects were due to emotion and were not attributable to other variables.Participants

The sample comprised 240 undergraduate university students (141 females and 99 males with a mean age of 21.3 years and aged between 17 and 24) recruited from a large southern university.

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Design, Procedure and Dependent VariableStudy 1b used a 3 (emotion: positive, neutral and negative) x 2 (digit: nine and zero)

between-subjects design to test the rightmost effect and employed the same experimental procedure and dependent variable as those of Study 1a.Stimuli

The only stimuli used for Study 1b were notebooks due to the Study 1a finding of no significant difference between any of the products tested. Each participant was shown advertisements displaying a regular price ($6) and a promotional price. The promotional prices were manipulated to end in either a zero ($5.00) or a nine ($4.99). The nine-ending prices employed in Study 1b had a dollar digit lower than the regular price dollar digit ($5.00 versus $4.99), in contrast to the nine-ending manipulation scheme used in Study 1a in which the dollar digit ($5.60 versus $5.59) did not change. The cover story manipulation, the advertisements, and the experimental procedure were similar to those used in Study 1a (see Table 1).Emotion Induction

The emotion induction method employed in this study was adapted from the methods used by Forgas and Ciarrochi (2001) and Adaval (2003). A segment from the feature film Pretty Woman was shown to induce happiness among the positive emotional condition group. The film clip was 20 minutes and 22 seconds long and was chosen because previous studies have shown that the film reliably induces happy emotions (Adaval, 2003). The participants in the negative emotional condition group were shown a clip from the movie Ordinary People to induce sadness. The clip was 21 minutes and 45 seconds long, and was extracted from a film which previous studies have utilized to successfully induce sadness (Adaval, 2003). The participants were instructed to watch the film clips as if they were watching a video at home and to become fully involved in the film. A neutral film clip from a silent movie which served as the baseline for comparison (Lane, Reiman, Ahern, Schwartz, and Davidson, 1997) was shown to the subjects in the control group. Film as an emotional manipulator helps to exclude potential motivational and cognitive preoccupations in memory (the so-called autobiographical task). The Cronbach’s alpha for the two items measuring perceived happiness demonstrated an adequate degree of convergence (α = .91), indicating it was appropriate to use the averaged response for the manipulation check.

After the emotion inducement procedure had been completed, the participants were all asked to respond to questions about the attractiveness of the transaction values of the stimuli.

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Perceived Processing FluencyOn the level of perception, processing fluency is known as perceptual fluency and

describes the differing degrees of speed, effort and accuracy with which most stimuli are processed. For example, Novemsky, Dhar, Schwarz, and Simonson (2007) stated that perceptual fluency might be influenced by variables such as simple repetition, stimulus clarity, form priming, figure-ground contrast and presentation duration. Other studies have further demonstrated the relationship between perceptual fluency and incidental emotion. For example, Reber, Schwarz, and Winkielman (2004) showed that individuals interpret the positive emotions induced by processing fluency as their response to the target, thereby resulting in more positive evaluations. That is, the influence of perceptual fluency on judgment is mediated by the emotional reaction elicited by the target.

Study 1a did not examine how incidental emotion influences one’s perceptual fluency. Many emotion-related theories indicate that incidental emotion influences the individual’s cognitive responses. For example, Marcus et al. (2000) stated that negative emotions lead to more thoughtful decision making because they promote increased analytic processing and a low level of processing fluency. Moreover, the theory of emotional intelligence holds that people tend to use emotions — negative ones in particular — to think deeply about their opinions (Marcus et al., 2000).

Therefore, based on the investigations of Nielsen and Escalas (2010), Reber, Winkielman, and Schwarz (1998), and Shah and Oppenheimer (2007), Study 1b measured perceptual processing fluency by asking participants to rate their perceived processing fluency to three items on a scale ranging from 1 (not at all easy, difficult, fluent, and quick) to 7 (very easy, difficult, fluent, and quick). Cronbach’s alpha for the three items measuring perceived processing fluency showed an adequate degree of convergence (α = .93), indicating it was appropriate to use the averaged response for measurement purposes.

The response time from the end of the emotion induction to completion of all the questions that followed was also measured to ensure an adequate level of processing fluency. The results showed that the participants in the positive emotional condition group spent less time completing the questions than those in the control group (M = 53.21, SD = 4.31 versus M = 64.16, SD = 9.66, respectively; t = 11.48, p < .01), who spent less time answering the questions than those in the negative emotional condition group (M = 64.16, SD = 9.66 versus M = 89.31, SD = 11.26, respectively; t = 14.23, p < .01). There were significant differences in the response times among the participants in the three groups (F(2, 234) = 71.96, p < .01). These results confirmed the appropriateness of the processing fluency measure adopted.

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ResultsA one-way ANOVA showed the emotion induction procedure significantly influenced

the respondents’ ratings of their happiness based on the average of the two manipulation check items (α = .83) (F(2, 234) = 36.51, p < .01). The participants in the positive emotional condition group were happier than those in the control group (M = 5.07, SD = 1.01 versus M = 4.11, SD = .79, respectively; t = 6.20, p < .01), who in turn were happier than those in the negative emotional condition group (M = 4.11, SD = .79 versus M = 3.35, SD = .69, respectively; t = 4.23, p < .01). There were significant differences in the level of happiness among the participants in the three groups (F(2, 234) = 45.22, p < .01). Apart from a simple main effect whereby emotion induction significantly influenced the respondents’ ratings of their happiness (F(2, 237) = 30.61, p < .01), there was no significant interaction or main effect between incidental emotion and the level of happiness and price-ending digits (all F values < 2.12, all p values > .12). These results confirmed the effectiveness of the induction of different emotional states.

The results reported in Table 2 also show that the main effect was the nine-ending price effect (F(1, 118) = 9.62, p < .01), indicating that the nine-ending price (M = 4.43, SD = 1.09) induced a greater purchase intention than did the zero-ending price (M = 3.91, SD = .87). Moreover, the analysis revealed a significant interaction effect between incidental emotion and the nine-ending price (F(2, 234) = 7.20, p < .01). Planned contrasts showed that the nine-ending price had a greater effect (M = 5.49, SD = .89) on purchase intention than the zero-ending price (M = 4.45, SD = .62) (t = 4.92, p < .01) for participants in the positive emotional condition, with similar results for those in the neutral emotional condition (M = 4.39, SD = .96 versus M = 3.49, SD = .79, respectively; t = 3.42, p < .01). In contrast, the negative emotional condition resulted in the nine-ending price having less of an effect (M = 3.07, SD = .80) on purchase intention than that exerted by the zero-ending price (M = 3.67, SD= .94) (t = 2.12, p < .05). Therefore, all the results showed that the nine-ending price effect might be strengthened by a positive emotional state and weakened by a negative emotional state.Mediation Analysis

A mediation analysis based on both procedures employed by Baron and Kenny (1986) and Zhao, Lynch, and Chen (2010) and the Sobel (1982) test was undertaken as part of this study to examine the mediating role of processing fluency. Three regression analyses were first performed according to the methods employed by Baron and Kenny (1986) and Zhao et al. (2010). The significant effect of emotion on purchase intention

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reported in the preceding section supported the first condition (β = .622, t = 7.27, p < .01). Emotion was a significant predictor of processing fluency (β = .802, t = 13.75, p < .01). The dependent variable was regressed on both emotion and processing fluency, and processing fluency remained a significant predictor (β = .645, t = 8.87, p < .01), whereas the effect of emotion on purchase intention became insignificant (β = .105, t = .66, p > .1). A Sobel test also confirmed that processing fluency mediated the effect of emotion on purchase intention (z = 3.66, p < .01). That is, both of the results supported H2.Discussion

Compared with the results of Study 1a, the two emotion induction methods employed in this study both confirmed our prediction regarding the influence of incidental emotion on the nine-ending price effect. The results demonstrated that participants experiencing positive emotions had a greater intention to purchase items with nine-ending prices than to purchase those with a zero-ending prices, whereas participants in a negative emotional state had a lower purchase intention with respect to items with a nine-ending price than for those with a zero-ending price. Moreover, the nine-ending price effects were the same for leftmost-digit and rightmost-digit numbers, indicating the influence of emotion on the nine-ending price effect is found not only in the rightmost-digit, but also in the leftmost-digit format.

The results of Study 1b also supported H2 predicting that processing fluency mediates the impact of emotion on the nine-ending price effect. They also indicated that consumers with positive emotions and a strong intention to purchase have a high level of processing fluency, whereas consumers experiencing negative emotions and low purchase intention have a low level of processing fluency.

3.2 Study 2Studies 1a and 1b explored the relationship among the rightmost and leftmost digit

price effects and emotions by employing two different emotion induction procedures. The results demonstrated that a positive emotional state among consumers induces a high level of processing fluency leading to a significant nine-ending price effect, whereas a negative emotional state induces a low level of processing fluency resulting in the absence of a nine-ending price effect. To test H1 in more depth, this study investigated whether emotion influences the image effect whereby respondents use nine-ending price information as an indicator of monetary gain (the price image effect) or quality loss (the quality image effect); that is, whether the image effect is a function of consumer emotion.

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It was predicted that consumers with positive emotions and a high level of processing fluency perceive nine-ending prices as more representative of monetary gain than of a loss of quality, and that the opposite would hold for consumers in a negative emotional state.

To extend our knowledge of processing fluency and test H2, Study 2 followed the procedure employed by Novemsky et al. (2007) in manipulating the level of processing fluency among the participants by asking them to write down two (for a high level of processing fluency) or ten (for a low level of processing fluency) reasons for their choices. Shafir, Simonson, and Tversky (1993) also stated that thinking about choices by writing down the reasons provides a way to help understand and explain decisions. That is, this manipulation scheme would not only produce statistical measures providing us with greater clarity on the mediating influence of processing fluency on the nine-ending price effect, but would also enable us to explore the psychological processes likely to be involved.Participants

The sample comprised 240 undergraduate university students (111 females and 129 males with a mean age of 20.6 years and aged between 18 and 24) recruited from a large southern university.Design, Procedure and Stimuli

Study 2 used a 3 (emotion: positive, neutral and negative) x 2 (digit: nine, zero) x 2 (fluency: high, low) between-subjects design. The same emotion induction method as that employed in Study 1a was used to manipulate the positive, neutral and negative emotions of the participants. After successfully manipulating the participants’ emotions, half of the participants in each group were asked to write down two reasons for their choices to induce a high level of processing fluency. The remaining participants were asked to write down ten reasons for their choices to induce a low level of processing fluency. After the end of the manipulation process, the participants were required to answer the following series of questions about the scenarios for perceived quality loss, monetary gain, and purchase intention. The stimuli used for Study 2 were the notebooks shown in Table 1.Processing Fluency

In most prior studies, processing fluency has been manipulated by using the degree of ease with which the content provided might be perceived. Novemsky et al. (2007) considered reason generation is not only an integral part of decision making in most conditions, but might also be a common source of fluency. In Study 2, the processing fluency of the participants was therefore manipulated to either a high level or a low level

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by asking them to write down two (ten) reasons for their choice. As expected, the participants felt it was significantly easier to generate two reasons than to generate ten (M = 5.11, SD = .81 versus M = 3.21, SD = .62, respectively; t = 5.95, p < .01). The results confirmed the effectiveness of the processing fluency manipulation scheme employed in this experiment.Emotion induction

To ensure there was no difference between the two emotion induction methods employed in Study 2, only Smith and Ellsworth’s (1985) manipulation scheme was used as in Study 1a.Perceived Monetary Gain

The participants were asked to evaluate price on 7-point semantic scales for two items: (1) good value for money (Chandrashekaran and Grewal, 2006); and (2) saving a lot of money (Compeau, Grewal, and Chandrashekaran, 2002) (α = .89). Their responses to each item were made on a 7-point scale that ranged from 1 (strongly agree) to 7 (strongly disagree).Perceived Quality Loss

Perceived quality loss was measured using two 7-point semantic scales from previous studies: (1) high quality/low quality (Boulding and Kirmani, 1993); and (2) superior/inferior (Keller and Aaker, 1992) (α= .92). Participants indicated their responses to each item on a 7-point scale that ranged from 1 (strongly agree) to 7 (strongly disagree).Results

A one-way ANOVA showed that the type of emotion induction to which participants were exposed significantly influenced their happiness ratings based on the average of the two manipulation check items (α = .86) (F(2, 228) = 32.44, p < .01). Participants exposed to the positive emotion induction rated their emotions as being significantly more pleasant than did those in the control group (M = 4.97, SD = .98 versus M = 3.89, SD = .73, respectively; t = 5.86, p < .01). Participants in the control group also felt significantly more happy than did those in the negative emotion group (M = 3.89, SD = .73 versus M = 3.30, SD = .59, respectively; t = 3.35, p < .01). Apart from a simple main effect whereby the type of emotion induction significantly influenced the respondents’ happiness ratings (F(2, 237) = 28.66, p < .01), there were no significant interactions or main effects on incidental emotions (all F values < 1.68, all p values > .19). The results confirmed the effectiveness of the emotion manipulation scheme employed in this experiment.

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As shown in Table 2 and Figure 1, a three-way ANOVA showed a significant interaction among the nine-ending price, emotion, and processing fluency (F(2,228) = 38.61, p < .01). To clarify the direction of the results, further planned paired contrasts on the nine-ending price revealed a significant interaction effect among positive, neutral and negative emotions for participants whose emotions were manipulated to induce a high level of processing fluency (F(2, 117) = 18.77, p < .01). The nine-ending price had a greater effect (M = 5.49, SD = .78) on purchase intention than that exerted by the zero-ending price (M = 4.21, SD = .63) (t = 6.65, p < .01) for participants in the positive emotional condition, with similar results also being derived for those in the neutral emotional condition (M = 4.41, SD = 1.03 versus M = 3.72, SD = .89, respectively; t = 3.19, p < .01). In contrast, the negative emotion induction resulted in the nine-ending price having less of an effect (M = 2.95, SD = .70) on purchase intention than the zero-ending price (M = 3.61, SD= .88) (t = 2.42, p < .05). However, the analysis indicated an insignificant pattern for those induced to experience a low level of processing fluency (F(2, 117) = 2.11, p > 0.1). These results all provided support for the prediction that processing fluency mediates the relation between incidental emotion and the nine-ending price effect.

5.49

4.41

2.95

4.864.44

3.33

4.213.72 3.61

4.313.99

3.53

9-ending 0-ending

no-fl

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y-posi

tive

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uenc

y-neu

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no-fl

uenc

y-neg

ative

fluen

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sitive

fluen

cy-ne

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fluen

cy-ne

gativ

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Figure 1 The Results of Study 2

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In addition, the participants in the positive emotional condition had significantly higher perceptions of the monetary gain represented by choosing the nine-ending price than did those in the negative emotional condition (Mpositive = 5.47, SD = 1.09; Mnegative = 3.35, SD = .91; t = 5.38, p < .01). In contrast, the respondents in the positive emotional condition perceived the quality loss represented by the nine-ending price to be significantly lower than that perceived by those in the negative emotional condition (Mpositive = 3.84, SD = 1.01; Mnegative = 4.61, SD = .98; t = 3.79, p < .01). That is, there was support for the image effect hypothesis explaining the influence of emotion on the nine-ending price effect.Discussion

Study 2 first showed that the effect of incidental emotion on the image effect was the same as that demonstrated by Studies 1a and 1b. Second, the results obtained in Study 2 also indicated that the monetary gain perceived by consumers experiencing positive emotions who evaluate a nine-ending price is greater than that perceived by those with negative emotions. Moreover, in comparison with consumers with negative emotions, the extent of the quality loss perceived by those with positive emotions was higher. Hence, the image effect hypothesis may support the explanation that emotion has an influence on the nine-ending price effect.

The results also demonstrated that processing fluency plays a mediating role between incidental emotion and purchase intention. When combined with the results of Studies 1a and 1b, those of Study 2 clearly demonstrate the important influence of processing fluency on the nine-ending price effect. One limitation of Study 2 is that it explored only happiness and sadness and did not consider different kinds of emotions previous research has indicated are worthy of exploration. Study 3 therefore examined a wider range of emotions and their influence on the nine-ending price effect.

3.3 Study 3Study 2 demonstrates the important role played by processing fluency in mediating

the relationship between emotion and the nine-ending price effect. The results of Study 2 mirror those of Studies 1a and 1b showing the nine-ending price effect is more significant when consumers in a positive emotional state judge nine-ending prices with a high level of processing fluency than when consumers in a negative emotional state judge nine-ending prices under the influence of a low level of processing fluency. In Study 3, we extended our investigation of the emotional influence on nine-ending price effect in an important

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question: do all positive or negative emotions have the same influence on the nine-ending price effect? To answer this question, Study 3 examined four emotional states that differ along both valence and certainty dimensions: disgust (negative valence, certainty), fear (negative valence, uncertainty), happiness (positive valence, certainty) and hopefulness (positive valence, uncertainty). This allows us to simultaneously investigate how emotion valence and certainty emotions can influence the nine-ending price effects. The findings will examine the third hypothesis which predicts that higher certainty results in a greater nine-ending price effect.Participants

The sample comprised 160 undergraduate university students (72 females and 88 males with a mean age of 20.6 years and aged between 18 and 24) recruited from a large southern university.Design, Procedure, Stimuli, Processing Fluency and Emotion Induction

Study 3 used a 2 (valence: positive, negative) x 2 (certainty: certainty, uncertainty) x 2 (digit: nine and zero) between-subjects design and employed the same experimental procedure and measure of processing fluency (α = .89) as those used in Study 1b. The stimuli for Study 3 were the notebooks shown in Table 1. Smith and Ellsworth’s (1985) manipulation was used in Study 3 for the same reason it was used in Study 2.Certainty and Uncertainty in Emotions

Based on the investigations of Smith and Ellsworth (1985) and Tiedens and Linton (2001), this study examined four emotional states that differ along both valence and certainty dimensions: disgust (negative valence, certainty), fear (negative valence, uncertainty), happiness (positive valence, certainty) and hopefulness (positive valence, uncertainty). The participants in the disgust induction were told to focus on a negative event that had made them feel disgusted (n = 40). In the fear induction, participants were asked to remember, relive and vividly recall a negative event that had made them feel scared (n = 40). Participants in the happiness condition were asked to recall a positive event that had made them feel happy (n = 40). Participants in the fourth group were instructed to recall a hopeful event (n = 40). After writing about these events, the participants responded to three items taken from Smith and Ellsworth’s (1985) appraisal questionnaire which assessed the certainty of the target emotion on a seven-point scale ranging from 1 (not at all) to 7 (extremely). The three items asked the participants to rate the degree to which they understood what was happening around them, how well they could predict what would happen next, and how certain they were about what was happening when they were feeling the target emotion (α = .87).

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Quantitative EstimatesQuantitative estimates of the number of items with nine-ending prices that could be

purchased with a certain sum were then examined to deepen our understanding of the nine-ending price effect. Bizer and Schindler (2005) developed a new experimental approach to avoid two major causes of failure in research into the nine-ending pricing effect. These two causes are a high degree of variation among open-ended responses in free-recall tasks (e.g., the short-term price recall task employed in the study of Schindler and Kibarian (1993) and unrealistic conditions (e.g., the several minutes given to respondents to examine an advertisement showing only one price in the study of Schindler and Kibarian (1993)).

According to the method employed by Bizer and Schindler (2005), participants answered questions regarding pricing perception by responding to the statement “How many $5.60 ($5.59) priced products can you buy with a $250 budget?” with integer numbers based on their calculation. Each estimate was allocated to one of three categories: accuracy, overestimation and underestimation. For example, quantitative estimates of 44 or 45 were categorized as accurate estimates, as participants could purchase 44.6 baseball caps priced at $5.60 with a budget of $250. Quantitative estimates influenced by the nine-ending price effect might result in one of two possible conditions: overestimation or underestimation. In the example given, if participants perceived the nine-ending price as representing a monetary gain (quality loss), then their perception would lead to larger (smaller) estimate.Results

An ANOVA conducted to appraise the degree of certainty participants had in their emotions indicated significant differences between those certain of their emotions and those uncertain of their emotional states ((F(1, 156) = 27.33, p < .01). Participants in the happiness and disgust groups (M = 4.57, SD = .85) were more certain than those in the hopefulness and fear groups (M = 4.12, SD = .77). The results revealed no significant interaction effects (all F values < 1.49, all p values > .22).

For the level of happiness, the only main effect observed was for the valence of incidental emotion on perceived happiness (F(1, 152) = 17.23, p < .01). Participants exposed to a positive emotion induction rated their feelings as happier (M = 5.21, SD = .93) than did those exposed to a negative emotion induction (M = 3.48, SD = .69). No other effects were significant (all F values < 1.86, all p values > .17).

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As predicted, the results shown in Table 3 demonstrated that the effects of certainty appraisals of incidental emotions on differences in quantitative estimates were significant (F(1,152) = 14.76, p < .01). The results also showed that a nine-ending price triggered greater differences in purchase quantity estimates than did a zero-ending price among people appraised as being certain of their incidental emotions (M

Diff-Happiness = 2.93, M

Diff-Disgust

= .88, F(1,86) = 26.35, p < .01). In contrast, there was no difference in purchase quantity estimates made by those uncertain of their incidental emotional state between nine-ending and zero-ending prices (M

Diff-Hopefulness = .40, M

Diff-Fear = .05, F(1, 86) = 2.33, p > .01). That is,

the foregoing results all provided support for H3.

Table 3 Quantitative Estimations in Studies 3 and 49-ending 0-ending difference F value P value

Study 3

Certainty-positive (Happiness) 47.85 44.92 2.93

Certainty-negative (Disgust) 45.68 44.80 0.88 14.76 <.01

Uncertainty-positive (Hopefulness) 45.02 44.62 0.40

Uncertainty- negative (Fear) 44.70 44.65 0.05

Study 4

Separate-positive 47.22 44.97 2.25

Separate-negative 45.51 44.71 0.80 4.33 <.05

Joint-positive 44.96 44.51 0.45

Joint-negative 44.67 44.59 0.08

To examine the results of the analyses in more depth, the quantitative estimates were also classified according to their consistency with the nine-ending pricing effect by calculating the percentage of participants choosing nine-ending and zero-ending prices among each group, as shown in Table 4. The results demonstrated an interaction among certainty appraisals, overestimates and underestimates, and nine- and zero-ending prices (χ2(1) = 6.23, p < 0.05). In addition, the result whereby a nine-ending price may trigger a greater percentage of overestimates than that triggered by a zero-ending price among people appraised as being certain of their incidental emotions was close to being marginally significant (χ2(1) = 2.58, p = .108). In contrast, the results provided significant evidence that a nine-ending price triggers a greater percentage of underestimates than a zero-ending price among people uncertain of their emotions (χ2(1) = 4.09, p < .05). Taken together, the results provided support for my inference.

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Table 4 Percentage of the Response Types in SE and JE Modes in Studies 3 and 4Accu.a Overb Underc

Study 3

Certainty-positive (Happiness) 0-ending 65 30 5

9-ending 30 55 15

Certainty-negative (Disgust) 0-ending 70 15 15

9-ending 45 35 20

Uncertainty-positive (Hopefulness) 0-ending 65 20 15

9-ending 40 40 20

Uncertainty-negative (Fear) 0-ending 75 5 20

9-ending 25 5 70

Study 4

Separate-positive 0-ending 70 20 10

9-ending 35 55 10

Separate-negative 0-ending 70 20 10

9-ending 40 5 55

Joint-positive 0-ending 75 20 5

9-ending 65 30 5

Joint-negative 0-ending 75 10 15

9-ending 70 5 25

a Accu.: The percentage of accurate groupb Over.: The percentage of overestimated groupc Under.: The percentage of underestimated group

DiscussionStudy 3 demonstrated that differences in quantitative estimates made by people

experiencing a high level of processing fluency induced by certainty in their emotions and those made by people with a low level of processing fluency induced by uncertainty in their emotions are greater when people experience positive emotions than when they experience negative emotions. These results helped clarify the role of incidental emotion and demonstrated the mediating influence of processing fluency on the nine-ending price effect. Nevertheless, further analysis was required in Study 4 to answer the second question referred to above.

3.4 Study 4Study 3 differentiated between the influences of emotional certainty and emotional

uncertainty on the nine-ending price effect. The findings helped clarify that not all positive

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and negative emotions have the same degree of influence on the nine-ending price effect. Further, Study 4 is to test the fourth hypothesis that people with positive emotions and people with negative emotions display greater nine-ending price effect in the SE condition than in the JE condition.Participants

The sample comprised 180 undergraduate university students (96 females and 84 males with a mean age of 20.6 years and aged between 18 and 24) recruited from a large southern university.Design, Procedure, Stimuli, Emotion Induction and Quantitative Estimates

Study 4 used a 2 (positive, negative) x 3 (separate nine-ending, separate zero-ending, and joint nine-ending and zero-ending) between-subjects design. The stimuli for Study 4 were the notebooks shown in Table 1. The participants were asked to make quantitative estimates of the number of items that could be purchased with a given budget. There were two items available within each product type, each of which had a different fictional brand name (S and K) and a price ending in a different number (a nine-ending price and a zero-ending price one dollar higher). The prices of S-branded items in the same leftmost group (the experiment group) were manipulated so they had nine-ending prices ($5.59), whereas the prices of K-branded items were manipulated so they had zero-ending prices one cent higher ($5.60). The participants were randomly divided into three subgroups, each of which was randomly assigned to one of three conditions: SE of nine-ending prices, SE of zero-ending prices, and JE of prices ending in both nine and zero.

The participants were informed that they needed to shop for notebooks. The questionnaire prepared for the study included product descriptions (brand name and price) and pictures. Each participant received the questionnaire inquiring into the S-brand product, the K-brand product, or both brands. Participants assigned to the first two conditions saw only one product of a specific brand on the same page, whereas those in the third condition saw products in the same category from both brands on the same page. Participants in the SE condition saw only one kind of price, i.e. either a nine-ending price or zero-ending price. By contrast, participants in the JE condition saw both kinds of prices side by side at the same time. The emotion induction method employed was the same as that used in Study 1a, and the independent variable was the same as in Study 3.Results

A two-way ANOVA based on the average of the two manipulation check items (α = .92; F(2, 174) = 17.86, p < .01) showed a significant interaction between the level of

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happiness and the different evaluation modes with nine- and zero-ending digits on incidental emotions. A simple main effect of emotion induction significantly influenced the respondents’ ratings of their happiness (F(1, 178) = 47.04, p < .01). However, no other effects were found (all F values < 1.56, all p values > .21). The results confirmed the effectiveness of the emotion manipulation scheme employed in this experiment.

An ANOVA was performed for the quantitative estimates. The interaction effect of evaluation condition and incidental emotion on the nine-ending price effect was significant (F(2,174) = 4.33, p < 0.05). Further planned paired contrasts of the differences between mean quantitative estimates for nine-ending and zero-ending priced items revealed a significant difference between positive and negative emotions for participants under the SE condition (MDiff-SE-Positive

= 2.25, MDiff-SE-Negative

= .80, F(1, 88) = 5.79, p < 0.01). In addition, the analysis indicated an insignificant pattern for those under the JE condition (M

Diff-JE-Positive = .45, M

Diff-JE-Negative = .08, F(1, 88) = 2.28, p = .13). All of the results provided

support for H4.Further examination of the analyses demonstrated an interaction among evaluation

modes, overestimates and underestimates, and nine- and zero-ending prices (χ2(1) = 4.05, p < .05). There was also a significant effect whereby a nine-ending price may trigger a greater overestimate than that triggered by a zero-ending price among people in the SE mode (χ2(1) = 28.70, p < .01). In contrast, the results showed a significantly greater percentage of underestimates were triggered by a nine-ending price than by a zero-ending price among people in the JE mode (χ2(1) = 2.94, p < .1). Taken together, the results provided support for the inference of this research.Discussion

Study 4 demonstrated that differences between quantitative estimates made by individuals with a high level of processing fluency induced by the SE mode and those made by individuals with a low level of processing fluency induced by the JE mode were greater when they had positive emotions than when they had negative emotions. These results therefore provided an answer to the second question of how different evaluation modes may cause different nine-ending price effects and provided further clarification of the important role played by incidental emotion. The results also demonstrated the mediating influence of processing fluency on the nine-ending price effect.

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4. General DiscussionTheoretical implications

Emotion has an important influence on the nine-ending price effect. As demonstrated by the four studies reported in this article, an incidental emotional state can affect the nine-ending price effect through processing fluency. Greater purchase intention is associated with a nine-ending price only when people are in a positive emotional state that induces a high level of processing fluency, rather than being in a negative emotional state that elicits a low level of processing fluency.

The combined data from the four studies support the following findings. First, Study 1a demonstrates that positive affect increases the magnitude of the nine-ending price effect, whereas negative affect reduces the size of the effect. Based on the proposition that processing fluency plays a mediating role between emotional valence and nine-ending prices, study 1b corroborates the results of Study 1a in showing that positive emotions lead to a greater increase in the magnitude of the nine-ending price effect than do negative emotions. This research also found that emotion influences the level effect not only through the rightmost digit of the price (Study 1a), but also through the leftmost digit (Study 1b). The use of completely different emotion induction procedures in Studies 1a and 1b established the robustness of this observed effect of incidental emotion. In sum, this study provides strong evidence that emotional valence influences the level effect of nine-ending prices.

Second, consistent with processing fluency explanations, the findings of Study 2 show that incidental emotion affects the image effect through its influence on the perception of monetary gain (the price image effect) or quality loss (the quality image effect) produced by nine-ending prices. This finding is, with few exceptions, one rarely reported in the literature (Lin, Wu, Chuang, and Kao, 2007; Sheng, Parker, and Nakamoto, 2007). That is, when combined with the findings of Studies 1a and 1b, emotional valence is a key factor influencing not only the level effect, but also the image effect, of nine-ending prices. Study 2 also shows the conditions in which nine-ending prices may, but will not necessarily, be perceived as indicative of monetary gain: the perception of monetary gain is more likely to arise when consumers experience positive emotions inducing a high level of processing fluency, whereas they are more likely to perceive a loss of quality and have a lower purchase intention when they experience negative emotions invoking a low level of processing fluency. Thus, there seems to be a domain-invariant cognitive phenomenon underlying the popularity of nine-ending prices. In sum, Study 2 bridges the

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gap between consumer emotion, the cognition of monetary gain or quality loss, and consumer purchase intention in relation to items with nine-ending prices.

Third, consistent with processing fluency explanations, Study 3 shows there is an interaction between emotional valence and emotional certainty in nine-ending purchase quantity estimates. That is, certainty and positive emotions induce the highest level of processing fluency, resulting in the largest purchase quantity estimates among consumers, whereas uncertainty and negative emotions induce the lowest level of processing fluency, resulting in the smallest purchase quantity estimates among consumers. This research also distinguished between the influences of incidental emotional certainty and uncertainty on the quantity of nine-ending priced item purchases and concluded that certainty in one’s emotional state induces a higher level of processing fluency than that generated by uncertainty in one’s emotions.

The findings of Study 4 demonstrate that consumers experiencing positive emotions who make their choices in the SE mode have the highest level of processing fluency, resulting in the largest purchase quantity estimates, whereas those in a negative emotional state who make decisions in the JE mode have the lowest level of processing fluency, resulting in the smallest purchase quantity estimates. Study 4 further demonstrates that regardless of the emotional valence of the consumer, purchase quantity estimates for items with nine-ending prices are lower than those for items with zero-ending prices one level higher (e.g., $1.99 vs. $2.00) when prices are evaluated individually (the SE mode), and that there is no significant difference between nine-ending and zero-ending prices when both prices are evaluated side by side or simultaneously (the JE mode). These findings show that different evaluation modes result in different levels of processing fluency. The overestimate and underestimate results in Studies 3 and 4 also demonstrate the influence of emotional valence on the image effect.

In sum, the studies reported in this article make four broad contributions to the nine-ending price literature. First, this study’s use of the novel concept of processing fluency provides stronger evidence which proves that incidental emotion influences the nine-ending price effect. This research has found that people’s emotional state has an influence not only on the level effect of nine-ending prices, but also on their image effect. The second contribution to the literature is to demonstrate the mechanism by which processing fluency acts as a mediator, whereby happy consumers with a high level of processing fluency perceive nine-ending prices as higher than do sad consumers with a low level of processing fluency. Third, this study distinguished between the influences of incidental

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emotional uncertainty and certainty on the quantity of nine-ending priced items purchased and concluded that emotional certainty induces a higher level of processing fluency than that produced by emotional uncertainty. The final main contribution to the literature is to show that the nine-ending price effect is weaker where consumers evaluate prices jointly and therefore have a lower level of processing fluency than where they evaluate prices separately and therefore have a high level of processing fluency.Managerial implications

The present study argues that the asymmetric effects of positive and negative emotions induced by nine-ending prices produce different image effects that influence purchase intention: positive emotions are associated with price image effects and negative emotions are associated with quality image effects. When people experience positive emotions, a high level of processing fluency will induce them to recall various pleasant experiences and to view such experiences in a positive light. In other words, they will regard a nine-ending price as the retailer giving a small amount back to the consumer (the price image effect) and thus providing them with an opportunity to buy the product for less, which will greatly increase their purchase intention(Baumgartner and Steiner, 2007; Schindler and Kibarian, 1996; Schindler, 2006). In contrast, consumers experiencing negative emotions will experience a low level of processing fluency that recalls various negative experiences and projects them onto the object; in turn, they will view the nine-ending price as a signal of inferior or lower quality (the quality image effect), which will reduce their purchase intention (Baumgartner and Steiner, 2007; Stiving, 2000).

The findings reported in this article have important implications for practitioners and marketers. It shows that the psychological pricing of odd-ending is associated with greater purchase intention only when people are induced into a positive, rather than a negative, emotional state. Thus, sales may be enhanced if an offer uses a positive or gain frame (Choi, Lee and Ji, 2012) to signal the consumer that they were smart and savvy enough to find a good deal without taking advantage of a manufacturer or retailer. Event marketing can be a good consideration to provoke the positive emotion. The typical example is the anniversary ceremony festival of department. Instead of “Don’t lose out”, “Save” or “Enjoy” are largely used to induce purchase intention under happy atmosphere created by the department.

An intimidating or oppressive environment (e.g., dim lighting, strange music, crowded) should be avoided as well as the low quality image. Since odd prices could signal lower product quality, this tactic is better used for only the special promotion events

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to boost sales as long as shoppers do not perceive significant negative quality signals. Moreover, if store managers want to stage successful promotions, promotional products must be set up in a specific location far from products not being promoted to prevent decreasing the effectiveness of nine-ending pricing.Limitations and Directions for Future Research

The studies reported in this article are subject to a number of potential limitations. First, undergraduate students were used as subjects to explain the relationship between nine-ending price effects and emotion. Second, purchase decisions are likely to be moderated by the consumer’s degree of involvement. Although a pretest was conducted to ensure the stimulus materials selected for the main experiment were moderately familiar, and there was a minimal level of variance in the degree of consumer familiarity, the degree to which respondents became involved was beyond our control. Gupta and Cooper (1992) suggested that price tactics employed by luxury stores do not tend to be affected by unmotivated processing or ignorance of price information. It follows that the effect of emotion should be weaker in upper-end stores than in lower-end stores. The effect of emotion on nine-ending prices should also be more pronounced for less expensive products (Kim and Kramer, 2006). Both of these issues merit further research.

The effect of emotion on the nine-ending price effect may also be explained by the mood-congruent memory (MCM) model, the evaluation of objects and events is negatively influenced by negative emotions and positively influenced by positive emotions (Chuang, 2007; Innes-Ker and Niedenthal, 2002; Lin, Yen, and Chuang, 2006). Thus, when people experience a positive emotion, they will recall various pleasant events and view the information in a positive way. For example, they will be willing to believe the offered selling price of an object, and correspondingly, view the nine-ending price as an indicator of monetary gain, thus greatly increasing the transaction value. In contrast, when people experience a negative emotion, they will recall various negative experiences and project them onto the information. They will be unwilling to believe the offered selling price and view the nine-ending price as an indicator of product quality sacrifice, thus reducing the transaction value. Hence, individuals in a positive emotional condition will perceive a greater transaction value in a nine-ending price than will those in a negative emotional condition. The mood-congruent memory (MCM) model in explaining emotional effect on nine-ending effects should be further verified in future studies.

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作者簡介鄭尹惠

現為國立臺中教育大學國際企業學系教授,國立雲林科技大學企管博士。主要

研究領域為消費者行為、行銷管理、消費者心理及服務業管理。學術論文曾發表在

Journal of Behavioral Decision Making、Advances in Consumer Research、Journal of Judgment and Decision Making、Journal of Economic Psychology、International Journal of Psychology、Journal of Applied Social Psychology、Journal of Business Psychology、The Service Industries Journal 、Annals of Tourism Research等知名期刊。

莊世杰

現為國立中正大學企業管理學系教授,國立中央大學企業管理系博士。研究領

域為行銷管理、消費者行為、行為決策、消費心理及廣告策略等。學術論文曾發表

在 Journal of the Academy of Marketing Science、Marketing Letters、Journal of Behavioral decision Making、Advances in Consumer Research、Journal of Judgment and Decision Making、Journal of Economic Psychology、International Journal of Psychology Journal of Travel and Tourism Marketing、Journal of Applied Social Psychology、Journal of Business Psychology、Journal of Psychology、Annals of Tourism Research 等知名期刊。

*黃千容現為真理大學休閒遊憩事業學系副教授,國立中正大學企業管理學系博士。研

究領域為消費者行為、觀光研究、旅遊行為、餐旅服務行為等。學術論文曾發表在

戶外遊憩研究、Advances in Consumer Research、International Journal of Psychology、International Journal of Hospitality Management、Current Psychology、Annals of Tourism Research、Psychological Reports等知名期刊。

* E-mail: [email protected]