We examined the extent to which identifications of children’s friends across multiple contexts by both children and their mothers might differ from identifications made by both individuals working in concert as well as the sources of such differences. Interviews were conducted with 347 fifth-grade children and their mothers. A subset of 20 dyads also participated in qualitative interviews. Children and mothers created lists of children’s friends working separately and together. Individual completion and joint completion lists were compared to identify discrepancies. Qualitative participants reflected on sources of discrepancies. Discrepancies were predicted by ethnicity, child social problems, cross-gender and cross-ethnicity friendship status, and friendship context. Explanations for discrepancies suggested that discrepancies reflected both genuine differences in perspective and reporting error.