Many of the parents could not afford to keep their children and so many children ended up in large orphanages, where they were kept in poor conditions and received little in the way of emotional care
At the start of the observations, over half of the Romanian children were suffering from severe malnutrition and a low IQ, showing delayed intellectual development, compared to the control group
Due to research on institutions and the negative effects they have, policy changes were made to benefit children; for example, children's homes now avoid having large numbers of caregivers for each child and instead now have one or two 'key workers' who play a central role in their emotional care
In the Romanian orphans study there is a lack of confounding variables. The Romanian orphans had, in the main, been handed over by loving parents who could not afford to keep them
The Romanian orphanage study allowed psychologists to study cause and effect, which is usually incredibly hard to do with adoptions studies, as those children being adopted have been removed for neglect or abuse reasons, however, this was not the case with the Romanian orphanages
Hodges and Tizard (1989) stated the adverse effects of institutionalisation could be reversed if children were adopted by effective families or had adequate care. They found children who had been adopted by adequate families, often, coped better on measures of behavioural and peer relationships than those children returned to their biological families
Children were not randomly allocated to conditions in this study, which means the more sociable children could have been adopted first
This study could lack external validity as the quality of care was so poor in Romanian orphanages that it cannot be compared to others. This means the harmful effects seen in the studies of Romanian orphans may represent the effects of poor institutional care rather than institutional care in general
There is a current lack of adult data on adult development. The latest data only looks at children in their early to mid-20s