Before,Bolwby’s theory children were separated from parents when they spent time in the hospital and visiting was discouraged and even forbidden. Robertson(1952) filmed a two year old girl for the 8 day period she stayed at a hospital,she was seen to be frequently distressed and begs to go home, this supported bowlby's theoriesand led to a major social change in hospital care for children. supporting maternal deprivation theory as it shows emotional disturbance seperation and then deprivation causes