This study was concerned with the differences between two types of prisoners on a personality dimension and differences between these prison groups an a non-prison population. The impetus for this study stemmed from the development of a new test designed to scientifically measure the Freudian concept of the personality structures, the id, ego, and superego.

Many of the causes for delinquency are known, but more investigation is needed in the prediction of future delinquent behavior. It was in this area of delinquency that this study was concerned. The problem was to compare scores made on the IES Test by a group of nondelinquent males with those made by a group of delinquent males to determine if the IES Test would discriminate between these two groups.