In this study of self-serving bias, 20 male and 16 female second graders completed an academic task with a same-sex partner. Half of the groups consisted of friends and the other half were nonfriends. The children had 3 min to complete a math worksheet and were told their group's performance would be graded as a whole. Each group received success or failure feedback. Results showed a significant interaction between the type of relationship between the partners and the type of feedback they received. Nonfriends in the failure group were more likely to exhibit the self-serving bias.