Vartanian Lenny R, Spanos Samantha, Herman C Peter, Polivy Janet
School of Psychology.
Department of Psychology, University of Toronto.
Health Psychol. 2017 Apr;36(4):365-369. doi: 10.1037/hea0000447. Epub 2016 Oct 17.
Social factors have a powerful influence on people's food intake but people typically fail to acknowledge the influence of such external cues, instead explaining their food intake in terms of factors such as how hungry they are. We examined whether the tendency to explain one's food intake in terms of internal cues (i.e., hunger) rather than external cues (i.e., other people's behavior) would be apparent when those cues are in conflict with one another.
Female participants (n = 104) took part in a pizza taste test after having been food deprived for 18-hr or after consuming a meal-replacement preload. Half of the participants were also exposed to a social norm that conflicted with their deprivation condition: deprived participants were exposed to a low-intake norm, whereas preloaded participants were exposed to a high-intake norm. After completing the taste test, participants indicated the extent to which their food intake was influence by how hungry they were and how much other people ate.
Deprived participants ate less when exposed to a low-intake norm than when no norm was present, but reported that the behaviors of others had no impact on their food intake. In contrast, preloaded participants did not eat significantly more when exposed to a high-intake norm, but reported that the behavior of others made them eat more.
Participants are generally inaccurate in the attributions they make for their food intake, and we suggest that these inaccuracies may be because of motivated misreporting. (PsycINFO Database Record
社会因素对人们的食物摄入量有强大影响,但人们通常未能认识到此类外部线索的影响,而是根据自身饥饿程度等因素来解释自己的食物摄入量。我们研究了在内部线索(即饥饿)与外部线索(即他人行为)相互冲突时,人们用内部线索而非外部线索来解释自身食物摄入量的倾向是否会显现出来。
女性参与者(n = 104)在禁食18小时后或食用代餐预负荷后参加了披萨口味测试。一半的参与者还接触到了与他们的禁食状况相冲突的社会规范:禁食的参与者接触到低摄入量规范,而预先进食的参与者接触到高摄入量规范。完成口味测试后,参与者指出他们的食物摄入量受自身饥饿程度和他人食量影响的程度。
禁食的参与者在接触低摄入量规范时比没有规范时吃得更少,但报告称他人的行为对他们的食物摄入量没有影响。相比之下,预先进食的参与者在接触高摄入量规范时并没有明显吃得更多,但报告称他人的行为使他们吃得更多。
参与者对自己食物摄入量的归因通常不准确,我们认为这些不准确可能是由于动机性错误报告。(PsycINFO数据库记录)