Sixty five institutionalized juvenile boy delinquents aged 11 to 21 years were screened for behavioral deviance in relation to familial and social variables. Data of behavioral deviant children was compared with similar data available for the group of children not identified by the screen. Results of this study revealed statistical associations between behavioral deviance among juvenile boy delinquents and most of the studied familial/social backgrounds and morbid parent-child relationships. Knowledge about these issues should be applied in understanding and planning the treatment of the delinquent.