The English and Romanian Adoptees (ERA) study constituted an invaluable "natural experiment" in which there was a rapid, easily-timed transition from a profoundly depriving environment in Romanian institutions to generally well-functioning adoptive families in England. Multimodal methods of assessment were used throughout the assessments at 4, 6, 11, and 15 years of age. Four key findings were particularly striking. First, institutional deprivation...