Rutter and Sonuga-Barke (2010)
-165 children who spent their lives in Romanian institutions
-from this group 111 were adopted before the age of 2 and 54 by the age of 4
-physical, cognitive and social development were tested at 4, 5,11 and 15 years
-compared to control group of 52 British children adopted before the age of 6 months
-at the time of adoption, romanian children were behind on all development measures
-by 4 years of age almost all of the early adopted children had caught up with the British children
-effects of privation can be reversed if an attachment starts to form before the age of 6 months
-long-term effects are more permanent if attachment doesn't start to occur within 6 months