The correctional treatment of offenders is outlined for the United States, England and Wales, West Germany, France, Sweden, and the Netherlands. A second research study used computerized criminal records to examine recidivism patterns for persons convicted of professional or gross negligence causing death or bodily harm. Other research examined the effect of the length of previous imprisonment upon the length of time between release and subsequent convictions (recidivism). Findings showed that the interval between release and new convictions varied positively with the length of the previous prison term. Using a sample of cases coming before the parole board in 1976, a model to predict parole board decisions was developed in another 1981 research study. Factors affecting community adjustment after release from rehabilitation aid hostels and an assessment of treatment programs in such hostels are discussed in one research project, and another study conducted a qualitative analysis of the trend in juvenile drug abuse. The study included analysis of the nature of abuse, the characteristics of abusers, and the correlation between abuses and delinquency. Other research examined the community adjustment of juvenile offenders after release from training schools and the differential treatment of juvenile offenders. Some tabular data accompany the presentations.