Eleanor and Sheldon Glueck embarked upon an internationally recognized partnership in criminology that would last the remainder of their lives.
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.
For the juvenile delinquents, they made attempts to predict criminality using statistics, followed by the likelihood of their rehabilitation upon release.
During the aftermath of the Holocaust he was one of the leading advocates for the creation of an international criminal court to punish crimes against humanity.