bowlby's research : procedure>>>
- Sample of 44 teen criminal who were accused of stealing
- All thieves were interviewed for signs of affectionless psychopathy
- Characteristed by lack of guilt, lack of empthay for victims
- Their families were also interviewed to establiseh whther the theives had early prolonged sepration from their mothers
- Sample was compared to a control group of 44 non-criminals but were emotionally disturbed