effects of insitutionalisation

• studied effects of privation in south american orphanages
• nurses rarely interacted with children even at feeding times
• suffered from anadictic depression characterised by apprehension, sadness, weepiness, sleep problems, refusing to eat
• 1 third of children dies before their first birthday dispite good medical care

evaluation

• high ecological validity- looked at real orphans in real orphanages
• low poulation validity- different orphanages may provide different care, so children may develop differently
• research conducted between 1945 and 1952 and as care in orphanages may have improved over time the study may be out of date

• privation can be caused by policies ij orphanages which stop nurses from forming attachments with children
• privation can be reversed by warm loving care
• at 16, children who were privated were more likely to be bullies and not make friends

see link below for full study and evaluation

http://getrevising.co.uk/revision-notes/hodges_and_tizard_privation

• studied a group of children who suffered from deprivation dwarfism
• a change in diet didn't improve them but a change in supervisor did. the old supervisor was cruel but the new one was kind
• this shows that good emotional care rather than physical care was the cause for their improvements

evaluation

• high ecological validity as it used a real life situation
• low population validity as it only involved one orphanage so different orphanages many use care that effects children differently
• good internal validity as the conclusions that emotional care can effect growth are valid asd the accounted for other variables such as a change in diet