“…Beginning in early childhood, positive peer interactions and later the establishment of peer friendships become critical developmental tasks (Hartup & Moore, ), which predict later psychological and behavioral adjustment (e.g., Reijntjes, Kamphuis, Prinzie, & Telch, ). PI youth, especially those who have experienced longer durations of adverse care, are reported to experience more social problems (e.g., Gunnar, van Dulmen, & International Adoption Project Team, ; Hawk & McCall, ; Pitula et al., ) including difficulties forming and maintaining friends (Almas et al., ; Hodges & Tizard, ). However, very little is known about the peer relationships of PI adoptees in early childhood, particularly using observational instruments rather than parental report.…”