Social histories and testing data were compiled during initial placement assessments of 147 individuals arrested and charged as child molesters, exhibitionists, and voyeurs. These data were statistically analyzed using discriminant analysis and analysis of variance (ANOVA). Child molesters, exhibitionists, and voyeurs were found to differ with regards to history of voyeurism; Minnesota Multiphasic Personality Inventory (MMPI) L scale scores; sexual arousal in response to a violent scenario involving a 12-year-old male, measured via penile plethysmography; and age. Implications of these results are discussed relative to the population sampled and future research.