Rutter et al followed 165 Romanian orphans who were adopted in Britain to test the extent to which good emotional care can make up for poor early experiences in institutions. Three groups: adopted before 6 months, adopted between 6 months and 2 years, adopted after 2 years. Compared to children from British institutions adopted at the same age(control group). Physical, cognitive and emotional development was assessed at the ages of 4, 6, 11 and 15.