ERA study, 165 Romanian orphans, 111 before age 2, 54 by age 4, tested physically, cognitively, and socially ages 4, 6, 11, 15, control group 52 British adoptees, all children institutionalised past 6 months of age malnourished and deficit in most aspects, most type D, if children form attachments later most is reversible, some effects far worse if no attachment formed