Post-institutionalized Chinese and Eastern European children participated in two emotion understanding tasks. In one task, children selected facial expressions corresponding to four emotion labels (happy, sad, angry, scared). The second task required children to match facial expressions to stories describing situations for these emotions. While both post-institutionalized groups scored lower than the never-institutionalized children, those from China performed better than those from Eastern Europe. Post-institutionalized children's performance was predicted by their age at adoption. (Contains 3 tables.)