Their landmark studies of inmates at the Massachusetts Reformatory examined the efficacy of the penal system and recidivism rates. In their controversial 1950 work Unraveling Juvenile Delinquency the two claimed that potential deviants could be identified by as young as six years of age. They would collaborate on more than 250 publications, beginning with Five Hundred Criminal Careers (1930), followed by Five Hundred Delinquent Women (1934) and One Thousand Juvenile Delinquents (1934).
Their significant research on inmates at the Massachusetts Reformatory investigated the effectiveness of the penal system and recidivism rates. In their provocative 1950 work Unraveling Juvenile Delinquency, the two asserted that potential deviants could be recognized as young as six years old. They would collaborate on over 250 publications, starting with Five Hundred Criminal Careers (1930), followed by Five Hundred Delinquent Women (1934) and One Thousand Juvenile Delinquents (1934).