Research on maternal deprivation has turned to orphan studies as a means of studying the effects of deprivation on emotional and intellectual development
Adaptation to living with multiple caregivers during sensitive period for attachment formation, in poor quality institutions a child might have 50 carers but doesn't spend enough time with any one to form a secure attachment
Damage to intellectual development from institutionalisation can be recovered if adoption takes place before 6 months, the age at which attachments form