Abstract

The willingness to cooperate in social interaction often depends on factors such as trustworthiness, reciprocity, and gender, but perhaps also on situational factors such as satiety. Here, we examined Trust Game performance before (fasting condition) and after ingestion of a high-caloric drink (satiety condition) of 37 psychologically healthy male subjects who played the game against individuals of both sexes differing in facial attractiveness. Participants invested significantly fewer money units (MUs) in the fasting condition compared to the satiated condition. Female opposing players received more MUs than males and attractive players more than less attractive ones. Time to arrive at a decision was shorter in the satiated condition than in the fasting condition. These findings indicate that satiety affects social cooperation and suggests that physical needs are prioritised over social cooperation.

摘要

在社交互动中合作的意愿通常取决于诸如信任，互惠和性别之类的因素，但也取决于诸如饱腹感等情况因素。在这里，我们检查了37名心理健康男性受试者的高热量饮料摄入前（禁食状态）和摄入高热量饮料后（饱腹感）的表现，该受试者与面部吸引力不同的男女玩游戏。与禁食状态相比，参与者在禁食状态下投资的货币单位（MU）明显少得多。与之相反，女性对战选手获得的MU高于男性，有吸引力的选手获得的MU则多于吸引力较低的选手。饱足状态下的决定时间比禁食状态下的时间短。