ABSTRACT
ONE of the most crucial weaknesses in pre-existing analyses of delinquency causation has been the failure to ascertain the specific psychologic and physiologic traits and the specific factors in the environment which occur more frequently among delinquents than among nondelinquents. In addition, there has been little attempt to determine which traits, reasonably inferred by such comparison to be associated with delinquency, are essentially hereditary and which are essentially environmental.
