Aim: to examine the effects of institutionalisation. Procedure: 165 Romanian orphans. 111 were adopted into Britain before the age of 2 years and 54 after the age of 2. Assessed at 4,6,11 and 15 years for physical, emotional, social and intellectual development. Findings: IQ negatively correlated to age of adoption. Disinhibited attachment (clingy and overfamiliar) found in those adopted later. Those adopted before the critical period recovered quicker. Physical delay was observed in those adopted later. Conclusion: institutionalisation can have long term negative effects.