Hardy, C. L., &Van Vugt, M. (2006). Nice guys finish first: The competitive altruism hypothesis. Personality and Social Psychology Bulletin, 32(10), 1402-1413.
Three experimental studies examined the relationship between altruistic behavior and the emergence of status hierarchies within groups. In each study, group members were confronted with a social dilemma in which they could either benefit themselves or their group. Study 1 revealed that in a reputation environment when contributions were public, people were more altruistic. In both Studies 1 and 2, the most altruistic members gained ...