A shorter, simpler version of the findings of research published in Unraveling Juvenile Delinquency (Commonwealth Fund-1950), this study of antisocial behavior was based on a comparative investigation of 500 persistent delinquents and 500 non-delinquents of similar ages, ethnic and economic backgrounds, etc. Its chief conclusion is that there is no single cause for maladaptive behavior, and that the plurality of causes derives from any number of factors analyzed here; parental adequacy; education; family relationships, facilities for recreation; the stability of the home; the school status; traits of character; etc. etc. And in closing, certain paths to prevention are indicated. An interesting study, for social welfare organizations, teachers and administrators, therapists, etc. in particular, and an absorbing dossier in itself.