It is suspected that rapists, child molesters, and offenders with both child and adult victims (mixed offenders) may have different motivations and offending patterns—that they are heterogeneous. A central difference between these groups of offenders may be their propensity toward sexually impulsive behaviors and compulsive behavior. Analyses were conducted to assess the mean differences between the various offender types across four measures related to sensation seeking and compulsivity as well as several other proxy behavioral measures. Results suggest that there are differences in sexual impulsive and compulsive behavior among the different types of offenders. Treatment implications are discussed
