rutter - romanian orphans
165 romanian orphans before being adopted by british families
some spent longer in the institution
physical, social and cognitive development was assessed at 4, 6, 11 and 15
compared to british adoptees
adopted before 6m - caught up in physical + cognitive development, mean IQ was 102
after 6m - showed disinhibited attachment and had problems with peers, mean IQ of 77
adopted after 2 years - the effect was more pronounced