A score is compiled from what is found from the factors. According to Simourd and Hoge (2000) these score have been able to significantly predict criminal behavior, most notably violent crimes. This study was done with 321 inmates serving sentences for violent offenses. More than half of them had been previously convicted and nearly all had extensive criminal careers. Using PCL-R, 11.2% were found out to be psychopaths and 88.8% were nonpsychopaths. By using Level of Service Inventory- revised (LSI-R) it was concluded that psychopaths did have greater risk and needs than nonpsychopaths. Simourd and Hoge (2000) also found that the psychopaths had been to prison more times than nonpsychopaths.
This previous study had no sexual offenders among the sample group. Porter, Fairweather, Drugge, Herve, Birt, Boer (2000) did a study to find out how prevalent psychopaths were in different types of acts of sexual violence. Also using PCL-R, Porter et al. (2000) found that rapists and mixed rapist/ molesters were more psychopathetic than molesters. Rapists were defined as having one or more victim older than age of 14 and none under that age. The Mixed rapist and molesters group had both type of victims. Molesters were not found to have any distinct correlation with psychopathy. It was also found that mixed offenders had scored higher in factor 1 than factor 2 of PCL- R. You can infer than, that they had insensitive personalities and that their life style was not as big of a factor in their committing of the acts. The molesters on the other hand, were not significantly related to psychopaths. A conclusion can me made than these offenders are not driven by a lack of caring toward of people but something else. This is opposed to what can be said about rapist who has had victims young and old. There is a definite relationship between psychopathy and them. A relationship between that finding was found by a study done by Hersh and Gray- Little (1998).
