Consuming with Others: Social Influences on Moment-to-Moment and Retrospective Evaluations of an Experience
两项实验发现，与他人一起消费时，人们的实时评价更一致，这种一致性导致更积极的回顾性评价，其机制是模仿和情绪传染。
Two studies examine differences in participants' moment-to-moment and retrospective evaluations of an experience depending on whether they are alone or in the presence of another person. Findings support our hypotheses that joint consumption leads to similar patterns or “coherence” in moment-to-moment evaluations and that greater coherence leads to more positive retrospective evaluations. We trace the emergence of coherence to processes of mimicry and emotional contagion in experiment 1 by comparing evaluations for pairs of participants who could see each other's expression with pairs who could not do so and in experiment 2 by coding participants' facial expressions and head movements for direct evidence of contagion.