How aware are people of food-related decisions they make and how the environment influences these decisions? Study 1 shows that 139 people underestimated the number of food-related decisions they made—by an average of more than 221 decisions. Study 2 examined 192 people who overserved and overate 31% more food as a result of having been given an exaggerated environmental cue (such as a large bowl). Of those studied, 21% denied having eaten more, 75% attributed it to other reasons (such as hunger), and only 4% attributed it to the cue. These studies underscore two key points: First, we are aware of only a fraction of the food decisions we make. Second, we are either unaware of how our environment influences these decisions or we are unwilling to acknowledge it.
Baron, R. M., & Kenny, D. A. (1986). The moderator-mediator variable distinction in social psychological research: Conceptual, strategic, and statistical consideration. Journal of Personality and Social Psychology, 51, 1173-1182.
2.
Berry, S. L., Beatty, W. W., & Klesges, R. C. (1985). Sensory and social influences on ice-cream consumption by males and females in a laboratory setting. Appetite, 6, 41-45.
3.
Birch, L. L., & Fisher, J. O. (2000). Mother’s child-feeding practices influence daughters’ eating and weight. American Journal of Clinical Nutrition, 71, 1054-1061.
4.
Birch, L. L., McPhee, L., Shoba, B. C., Steinberg, L., & Krehbiel, R. (1987). Clean up your plate: Effects of child feeding practices on the conditioning of meal size. Learning and Motivation, 11, 301-317.
5.
Bradburn, N., Sudman, S., & Wansink, B. (2004). Asking questions. San Francisco: Jossey-Bass.
6.
Brownell, K. D., & Horgren, K. B. (2003). Food fight: The inside story of the food industry, America’s obesity crisis, and what we can do about it. New York: McGraw-Hill/Contemporary Books.
7.
Chandon, P., & Wansink, B. (2002). When are stockpiled products consumed faster? A convenience-salience framework of post-purchase consumption incidence and quantity. Journal of Marketing Research, 39, 321-335.
8.
Chandon, P., & Wansink, B. (in press). Obesity and the calorie underestimation bias: A psychophysical model of fast-food meal size estimation. Journal of Marketing Research.
9.
Clendennen, V., Herman, C. P., & Polivy, J. (1994). Social facilitation of eating among friends and strangers. Appetite, 23, 1-13.
10.
Dunning, D. (2005). Self-insight: Roadblocks and detours on the path to knowing thyself. New York: Psychology Press.
11.
Fisher, J. O., Rolls, B. J., & Birch, L. L. (2003). Children’s bite size and intake of an entree are greater with large portions than with age-appropriate or self-selected portions. American Journal of Clinical Nutrition, 77, 1164-1170.
12.
French, S. A., Story, M., & Jeffery, R. W. (2001). Environmental influences on eating and physical activity. Annual Review of Public Health, 22, 309-325.
13.
Furst, T., Connors, M., Bisogni, C. A., Sobal, J., & Falk, L. W. (1996). Food choice: A conceptual model of the process. Appetite, 26, 247-266.
14.
Herman, C. P., & Polivy, J. (1984). A boundary model for the regulation of eating. In A. J. Stunkard & E. Stellar (Eds.), Eating and its disorders (pp. 141-156). New York: Raven.
15.
Kahn, B. E., & Wansink, B. (2004). The influence of assortment structure on perceived variety and consumption quantities. Journal of Consumer Research, 30, 581-596.
16.
Lowe, M. R. (1993). The effects of dieting on eating behavior: A three-factor model. Psychological Bulletin, 114, 100-121.
17.
Meiselman, H. L. (1992). Obstacles to studying real people eating real meals in real situations. Appetite, 19(1), 84-86.
18.
Neuendorf, K. A. (2002). The content analysis guidebook. Thousand Oaks, CA: Sage.
19.
Nisbett, R. E., & Wilson, T. D. (1977). Telling more than we can know: Verbal reports on mental processes. Psychological Review, 84(3), 231-259.
20.
Oppenheimer, D. M. (2004). Spontaneous discounting of availability in frequency judgment tasks. Psychological Science, 15, 100-105.
21.
Pandelaere, M., & Hoorens, V. (2006). The effect of category focus at encoding on category frequency estimation strategies. Memory and Cognition, 34, 28-40.
22.
Pliner, P. L. (1973). Effects of cue salience on the behavior of obese and normal subjects. Journal of Abnormal Psychology, 82(2), 226-232.
23.
Polivy, J., & Herman, C. P. (2002). Causes of eating disorders. Annual Review of Psychology, 53, 187-213.
24.
Polivy, J., Herman, C. P., Hackett, R., & Kuleshnyk, I. (1986). The effects of self-attention and public attention on eating in restrained and unrestrained subjects. Journal of Personality and Social Psychology, 50, 1203-1224.
25.
Rappaport, L., Peters, G. R., Downey, R., McCann, T., & Huff-Corzine, L. (1993). Gender and age differences in food cognition. Appetite, 20, 33-52.
26.
Rolls, B. J., Engell, D., & Birch, L. L. (2000). Serving portion size influences 5-year-old but not 3-year-old children’s food intakes. Journal of the American Dietetic Association, 100, 232-234.
27.
Rozin, P., Dow, S., Moscovitch, M., & Rajaram, S. (1998). What causes humans to begin and end a meal? A role for memory for what has been eaten, as evidenced by a study of multiple meal eating in amnesic patients. Psychological Science, 9, 392-396.
28.
Rozin, P., Kabnick, K., Pete, E., Fischler, C., & Shields, C. (2003). The ecology of eating: Smaller portion sizes in France than in the United States help explain the French paradox. Psychological Science, 14, 450-454.
29.
Schwarz, N. (1996). Cognition and communication: Judgmental biases, research methods and the logic of conversation. Mahwah, NJ: Lawrence Erlbaum.
30.
Schwarz, N. (1998). Warmer and more social: Recent developments in cognitive social psychology. Annual Review of Sociology, 24, 239-264.
31.
Sobal, J., & Wansink, B. (2007). Kitchenscapes, tablescapes, platescapes, and foodscapes: Influences of microscale built environments on food intake. Environment and Behavior. 39(1), 124-142.
32.
Stroebele, N., & de Castro, J. M. (2004). Effect of ambience on food intake and food choice. Nutrition, 20, 821-838.
33.
Vartanian, L., & Herman, C. P. (2005). Unawareness and denial in intake interventions [Unpublished working paper]. Toronto, Canada: University of Toronto, Department of Psychology.
34.
Wansink, B. (1995). Can package size accelerate usage volume?Journal of Marketing, 60(3), 1-14.
35.
Wansink, B. (2004). Environmental factors that increase the food intake and consumption volume of unknowing consumers. Annual Review of Nutrition, 24, 455-479.
36.
Wansink, B. (2006). Mindless eating: Why we eat more than we think. New York: Bantam-Dell.
37.
Wansink, B., & Cheney, M. M. (2005). Super bowls: Serving bowl size and food consumption. Journal of the American Medical Association, 293(14), 1727-1728.
38.
Wansink, B., Kent, R. J., & Hoch, S. J. (1998). An anchoring and adjustment model of purchase quantity decisions. Journal of Marketing Research, 35, 71-81.
39.
Wansink, B., & Kim, J. (2005). Bad popcorn in big buckets: Portion size can influence intake as much as taste. Journal of Nutrition Education and Behavior, 37(5), 242-245.
40.
Wansink, B., Painter, J. E., & North, J. (2005). Bottomless bowls: Why visual cues of portion size may influence intake. Obesity Research, 13(1), 93-100.
41.
Wansink, B., & Park, S. B. (2001). At the movies: How external cues and perceived taste impact consumption volume. Food Quality and Preference, 12(1), 69-74.
42.
Wansink, B., & van Ittersum, K. (2003). Bottoms up! The influence of elongation and pouring on consumption volume. Journal of Consumer Research, 30(3), 455-463.
43.
Wansink, B., & van Ittersum, K. (2005). Shape of glass and amount of alcohol poured: Comparative study of effect of practice and concentration. British Medical Journal, 331(7531), 1512-1514.
44.
Webber, R. P. (1989). Basic content analysis. Newbury Park, CA: Sage.
45.
World Health Organization. (1998). Obesity: Preventing and managing a global epidemic. Geneva: Author.
