Is Happiness Shared Doubled and Sadness Shared Halved? Social Influence on Enjoyment of Hedonic Experiences
研究提出并验证了在共享享乐体验（如看电影、度假）中，他人意见与自身一致会增强享受，不一致则削弱享受，且社会影响对体验判断和享受程度可能方向相反。
Because many hedonic stimuli (e.g., movies, vacations, food) are often consumed in the company of other people, it is important to know how social influence affects the enjoyment of shared experiences. Extrapolation from informational and normative influences suggests that enjoyment is enhanced when others offer positive opinions and diminished when they offer negative opinions about shared stimuli. In this article, the authors propose an alternative model. Building on the need to belong and the need for accuracy, the authors predict that enjoyment from sharing stimuli depends on consumers' perceived interpersonal agreements about the shared stimuli, such that congruence of opinions enhances and incongruence of opinions diminishes the enjoyment of the shared experience. The results from three experiments support the authors' predictions and indicate that under some circumstances, social influence can operate in opposite directions on judgments of shared stimuli and on the enjoyment of sharing them.