The present study investigated the relationship of 16 Personality Factor (16 PF) Scores to institutional adjustment, educational level, recidivism, and escapism of 665 prisoners in a maximum security prison. Two phases of data analysis were conducted. Multiple two-tailed Students' t tests resulted in significant differences on all 16 PF Factor Scores between prisoners and Cattell adult norm group. Significant differences were also found between prisoners and Cattell prisoner norms. In phase two, four multiple linear regression models were constructed. Significant 16 PF scales, age, and educational differences were found within the prisoner sample. Possible implications of the use of the 16 PF in regression models in paramorphic clinical prediction programs are discussed.