During the shopping process, shopping companions often offer many opinions to the shoppers spontaneously or in response to the shoppers’ inquiry, which often functions as a vital basis for shoppers making purchase decisions. The purpose of this research is to explore how social influence and personality differences impact our daily consumption. This research conducted two experiments to investigate how two kinds of social influence affect consumer’s purchase intention with perceived social value as a mediator and regulatory focus as a moderator. Accordingly, the independent variables are informational and normative influences provided by shopping companions; the dependent variable is purchase intention. In study 1, results showed that social influence from shopping companions would affect purchase intention through perceived social value. In study 2, regulatory focus showed moderating effects on the relationship between social influences and purchase intention.

Asch, S. E. (1955). Opinions and social pressure. Scientific American, 193, 31-35.

Allen, V. L. (1965). Situational factors in conformity. In L. Berkowitz (Ed.), Advances in experimental social psychology, 2, 133-175. New York: Academic Press.

Avnet, T., & Higgins, E. T. (2006). How regulatory fit affects value in consumer choices and opinions. Journal of Marketing Research, 43(1), 1-10.

Andrews, I. R., & Valenzi, E. R. (1971). Combining price, brand and store cues to form an impression of product quality. Proceedings of the Annual Convention of the American Psychological Association, 6(2), 649-650.

Argo, J. J., Dahl, D. W., & Manchanda, R. V. (2005). The influence of a mere social presence in a retail context. Journal of Consumer Research, 32(2), 207-212.

Brickman, P., & Bulman, R. J. (1977). Pleasure and pain in social comparison. In J. M. Suls & R. L. Miller (Eds.), Social comparison processes: Theoretical and empirical perspectives (pp. 149-186). Washington DC: Hemisphere.

Burnkrant, R. E., & Cousineau, A. (1975). Informational and normative social influence in buyer behavior. Journal of Consumer Research, 2(3), 206-215.

Bearden, W. O., & Etzel, M. J. (1982). Reference group influence on product and brand purchase decisions. Journal of Consumer Research, 9(2), 183-194.

Baron, R. M., & Kenny, D. A. (1986). The moderator-mediator variable distinction in social psychological research: Conceptual, strategic, and statistical considerations. Journal of personality and social psychology, 51(6), 1173-1182.

Breazeale, M., & Lueg, J. E. (2011). Retail shopping typology of American teens. Journal of Business Research, 64(6), 565-571.

Bearden, W. O., & Rose, R. L. (1990). Attention to social comparison information: An individual difference factor affecting consumer conformity. Journal of Consumer Research, 16(4), 461-471.

Borges, A., Chebat, J. C., & Babin, B. J. (2010). Does a companion always enhance the shopping experience? Journal of Retailing and Consumer Services, 17(4), 294-299.

Bearden, W. O., Netemeyer, R. G., & Teel, J. E. (1989). Measurement of consumer susceptibility to interpersonal influence. Journal of Consumer Research, 15(4), 473-481.

Bearden, W. O., Netemeyer, R. G., & Teel, J. E. (1990). Further validation of the consumer susceptibility to interpersonal influence scale. Advances in Consumer Research, 17, Provo, UT: ACR, 770-776.

Chernev, A. (2004). Goal orientation and consumer preference for the status quo. Journal of Consumer Research, 31(3), 557-565.

Cohen, J. B., & Golden, E. (1972). Informational social influence and product evaluation. Journal of Applied Psychology, 56(1), 54-59.

Crowe, E., & Higgins, E. T. (1997). Regulatory focus and strategic inclinations: Promotion and prevention in decision-making. Organizational behavior and human decision processes, 69(2), 117-132.

Childers. T. L., & Rao, A. R. (1992). The influence of familial and peer-based reference groups on consumer decisions. Journal of Consumer Research, 19(2), 198-211.

Chang, T. Z., & Wildt, A. R. (1994). Price, product information, and purchase intention: An empirical study. Journal of the Academy of Marketing Science, 22(1), 16-27.

Cronin, J. J., Jr., Brady, M. K., & Hult, G. T. (2000). Assessing the effect of quality, value, and customer satisfaction on consumer behavioral intentions in service environments. Journal of Retailing, 76, 193-218.

Crowley, A. E., Spangenberg, E. R., & Hughes, K. R. (1992). Measuring the hedonic and utilitarian dimensions of attitudes toward product categories. Marketing letters, 3(3), 239-249.

Chebat, J. C., Sirgy, M. J., & St-James, V. (2006). Upscale image transfer from malls to stores: A self-image congruence explanation. Journal of Business Research, 59(12), 1288-1298.

Chang, C. J., Pan, S.C., Chang, R. S., Lan, S., & Lin, C. Y. (2018). The impact of relationship closeness on hedonic adaptation: Perceived social value as a mediator. Asia-Pacific Advances in Consumer Research, 12, 74-74.

Deutsch, M., & Gerard, H. B. (1955). A study of normative and informational social influences upon individual judgment. The Journal of Abnormal and Social Psychology, 51(3), 629-636.
Dodds, W. B., & Monroe, K. B. (1985). The effect of brand and price information on subjective product evaluations. Advances in Consumer Research, 12, 85-90.

Dahl, D. W., Manchanda, R. V., & Argo, J. J. (2001). Embarrassment in consumer purchase: The roles of social presence and purchase familiarity. Journal of Consumer Research, 28(3), 473-481.

Dodds, W. B., Monroe, K. B., & Grewal, D. (1991). Effects of price, brand, and store information on buyers’ product evaluations. Journal of Marketing Research, 28(3), 307-319.

Engel, J. F., Blackwell, R. D., & Kollat, D. T. (1978). Consumer behavior. Illinois, The Dryden Press.

Eagly, A. H., & Chaiken, S. (1993). The psychology of attitudes. Harcourt Brace Jovanovich College Publishers.

Festinger, L. (1954). A theory of social comparison processes. Human Relations, 7, 117-140.

Feick, L. F., Price, L. L., & Higie, R. A. (1986). People who use people: The other side of opinion leadership. in NA-Advances in Consumer Research Volume 13, eds. Richard J. Lutz, Provo, UT: Association for Consumer Research, 301-305.

Florack, A., Scarabis, M., & Gosejohann, S. (2005). Regulatory focus and consumer information processing. In Kardes, F. R., Herr, P. M. & Nantel, J. (Eds.), Applying social cognition to consumer-focused strategy (pp. 235-263). Mahwah: Erlbaum.

Granbois, D. H. (1968). Improving the study of customer in-store behavior. Journal of Marketing, 32(4), 28-33.

Gilbert, D. T., Giesler, R. B., & Morris, K. A. (1995). When comparisons arise. Journal of Personality and Social Psychology, 69(2), 227-236.

Grewal, D., Monroe, K. B., & Krishnan, R. (1998). The effects of price-comparison advertising on buyers' perceptions of acquisition value, transaction value, and behavioral intentions. Journal of Marketing, 62(2), 46-59.

Higgins, E. T. (1987). Self-discrepancy: A theory relating self and affect. Psychological Review, 94(3), 319-340.

Higgins, E. T. (1997). Beyond pleasure and pain. American Psychologist, 52(12), 1280-1300.

Higgins, E. T. (1998). Promotion and prevention: Regulatory focus as a motivational principle. In M. P. Zanna (Ed.), Advances in experimental social psychology, 30, 1-46.

Higgins, E. T. (2002). How self-regulation creates distinct values: The case of promotion and prevention decision making. Journal of Consumer Psychology, 12(3), 177-191.

Hussain, R., & Ali, M. (2015). Effect of store atmosphere on consumer purchase intention. International Journal of Marketing Studies, 7(2), 35-42.

Hart, P. M. & Dale, R. (2014). With or without you: The positive and negative influence of retail companions. Journal of Retailing and Consumer Services, 21(5), 780-787.

Helgeson, V. S., & Mickelson, K. D. (1995). Motives for social comparison. Personality and Social Psychology Bulletin, 21(11), 1200-1209.

Higgins, E. T., Friedman, R. S., Harlow, R. E., Idson, L. C., Ayduk, O. N., & Taylor, A. (2001). Achievement orientations from subjective histories of success: Promotion pride versus prevention pride. European Journal of Social Psychology, 31(1), 3-23.

Jain, S. P., Agrawel, N., & Maheswaran, D. (2006). When more may be less: The effects of regulatory focus on responses to different comparative frames. Journal of Consumer Research, 33(1), 91-98.

Kelley, H. H. (1952). Two functions of reference groups. In G. E. Swanson, T. M. Newcomb, & E.L. Hartley (Eds.), Readings in social psychology (2rid ed., pp. 410-420). New York: Holt, Rinehart & Winston.

Kelman, H. C. (1958). Compliance, identification, and internalization three processes of attitude change. Journal of conflict resolution, 2(1), 51-60.

Kelman, H. C. (1961). Processes of opinion change. Public Opinion Quarterly, 25(1), 57-78.

Kelman, H. C. (1974). Further thoughts on the processes of compliance, identification, and internalization. In J. T. Tedeschi (Ed.), Perspectives on social power, Chicago, IL: Aldine, 126-171.

Kiecker, P., & Hartman, C. L. (1993). Purchase pal use: Why buyers choose to shop with others. In R. Varadarajan & B. Jaworski (Eds.), Marketing theory and applications, Chicago, IL: American Marketing Association, 378-384.

Kiecker, P., & Hartman C. L. (1994). Predicting buyers’ selection of interpersonal sources: The role of strong ties and weak ties. In C. T. Allen & D. R. John (Eds.), Advances in consumer research (Vol. 21, pp. 464-469). Provo, UT: Association for Consumer Research.

Kirmani, A., & Zhu, R. J. (2007). Vigilant against manipulation: The effect of regulatory focus on the use of persuasion knowledge. Journal of Marketing Research, 44(4), 688-701.

Lascu, D. N., & Zinkhan, G. (1999). Consumer conformity: Review and applications for marketing theory and practice. Journal of Marketing Theory and Practice, 7(3), 1-12.

Lockwood, P., Jordan, C. H., & Kunda, Z. (2002). Motivation by positive or negative role models: Regulatory focus determines who will best inspire us. Journal of Personality and Social Psychology, 83(4), 854-864.

Leonardelli, G. J., Lakin, J. L., & Arkin, R. M. (2007). A regulatory focus model of self-evaluation. Journal of Experimental Social Psychology, 43(6), 1002-1009.

Liberman, N., Idson, L. C., Camacho, C. J., & Higgins, E. T. (1999). Promotion and prevention choices between stability and change. Journal of Personality and Social Psychology, 77(6), 1135-1145.

Moschis, G. P. (1976). Social comparison and informal group influence. Journal of Marketing Research, 13, 237-244.

Micu, C. C., & Chowdhury, T. G. (2010). The effect of aging and time horizon perspective on consumers' response to promotion versus prevention focus advertisements. International Journal of Advertising, 29(4), 621-642.

Monroe, K. B., & Dodds, W. B. (1988). A research program for establishing the validity of the price-quality relationship. Journal of Academy of Marketing Science, 16(1), 151-168.

Mcintyre, K. P., & Eisenstadt, D. (2011). Social comparison as a self-regulatory measuring stick. Self and Identity, 10, 137-151.

Monroe, K. B., & Krishnan, R. (1985). The effect of price on subjective product evaluations. In Jacoby, J. and Olson, J. C. (Eds.), Perceived Quality: How Consumers View Stores and Merchandise, Lexington Books, Lexington, MA, 209-232.

Morwitz, V. G., & Schmittlein, D. (1992). Using segmentation to improve sales forecasts based on purchase intent: Which “intenders” actually buy? Journal of Marketing Research, 29(4), 391-405.

Mayer, N. D., & Tormala, Z. L. (2010). “Think” versus “feel” framing effects in persuasion. Personality and Social Psychology Bulletin, 36(4), 443-454.

Mangleburg, T. F., Doney, P. M., & Bristol, T. (2004). Shopping with friends and teens’ susceptibility to peer influence. Journal of Retailing, 80(2), 101-116.

Pham, M. T., & Avnet, T. (2004). Ideals and oughts and the reliance on affect versus substance in persuasion. Journal of Consumer Research, 30(4), 503-518.

Pham, M. T., & Chang, H. H. (2010). Regulatory focus, regulatory fit, and the search and consideration of choice alternatives. Journal of Consumer Research, 37(4), 626-640.

Price, L. L., & Feick, L. F. (1984). The role of interpersonal sources in external search: An informational perspective. In Advances in Consumer Research, Vol. 11, Thomas C. Kinnear, ed. Provo, UT: Association for Consumer Research, 250-255.

Pham, M. T., & Higgins, E. T. (2004). Promotion and prevention in consumer decision making: State of the art and theoretical propositions. Inside Consumption: Consumer Motives, Goals, and Desires, 8-43.

Park, C. W., & Lessig, V. P. (1977). Students and housewives: Differences in susceptibility to reference group influence. Journal of Consumer Research, 4(2), 102-110.

Pincus, S., & Waters, L. K. (1977). Informational social influence and product quality judgments. Journal of Applied Psychology, 62(5), 615-619.

Ratner, R. K., & Kahn, B. E. (2002). The impact of private versus public consumption on variety-seeking behavior. Journal of Consumer Research, 29(2), 246-257.

Rao, A. R., & Monroe, K. B. (1989). The effect of price, brand name, and store name on buyers’ perceptions of product quality: An integrative review. Journal of Marketing Research, 26(3), 351-357.

Render, B., & O'Connor, T. S. (1976). The influence of price, store name and brand name on perceptions of product quality. Journal of the Academy of Marketing Science, 4(3), 722-730.

Schiffman, L. G., & Kanuk, L. L. (2000). Consumer Behavior. 7th Edition, Upper Saddle River, N.J: Prentice Hall.

Salancik, G. R., & Pfeffer, J. (1978). A social information processing approach to job attitudes and task design. Administrative science quarterly, 23(2), 224-253.

Sweeney, J. C., & Soutar, G. N. (2001). Consumer perceived value: The development of a multiple item scale. Journal of Retailing, 77(2), 203-220.

Sommer, R., Wynes, M., & Brinkley, G. (1992). Social facilitation effects in shopping behavior. Environment and Behavior, 24(3), 285-297.

Wood, J. V. (1989). Theory and research concerning social comparisons of personal attributes. Psychological Bulletin, 106(2), 231-248.

Woodruff, R. B., & Gardial, S. F. (1996). Know your customer: New approaches to understanding customer value and satisfaction, Blackwell, Cambridge, MA.

Wood, W., & Hayes, T. (2012). Social influence on consumer decisions: Motives, modes, and consequences. Journal of Consumer Psychology, 22(3), 324-328.

Wheeler, L., & Miyake, K. (1992). Social comparison in everyday life. Journal of Personality and Social Psychology, 62(5), 760-773.

Woodside, A. G., & Sims, J. T. (1976). Retail sales transactions and customer purchase pal effects on buying behavior. Journal of Retailing, 52(Fall), 57-64.

Wood, J. V., & Wilson, A. E. (2003). How important is social comparison? In M. R. Leary & J. P. Tangney (Eds.), Handbook of self and identity (p. 344-366). The Guilford Press.

Zeithaml, V. A. (1988). Consumer perceptions of price, quality, and value: A means-end model and synthesis of evidence. Journal of Marketing, 52(3), 2-21.