bowlby 1944, 44 juvenille thieves
a = long-term effects of maternal deprivation
group 1 - thief group, 44 teens referred to him due to the stealing
group 2 - control group, 44 teens referred because of their emotional problems
two groups - matched for age and IQ
children and parents were interviewed and tested by psychiatrist (bowlby), a psychologist and a social worker focusing specifically on the early life experiences