Compared activity and behaviors of 36- to 82-month-olds adopted from Romanian orphanages and with varying lengths of institutionalization (more than 6 months or less than 2 months) with those of age- and gender-matched American-born control groups. Found that each Romanian group exhibited more problems in activity level, organization, and social-emotional behaviors than its matched control group, indicating persisting effects of early deprivation on activity level, organization, and social-emotional behaviors. (Author/KB)