Sexually violent predators and civil commitment: is selection evidence based?

Sexual offenses represent an alarming proportion of crimes committed yearly. To address these concerns, several states, including South Carolina (SC), have enacted laws requiring sexually violent predators (SVPs) to be civilly committed to treatment. To date, no published study has examined sexual offenders recommended for treatment in SC. This study used a specially designed statewide database (SC-SVP research database) to determine which offender and offense characteristics were associated with increased likelihood of being recommended for civil commitment. Factors correlated with being more likely to be recommended included: being of a younger age at time of evaluation, prior sex convictions, having related and unrelated victims, a higher number of victims, frequent substance use, and a history of suicide attempts. Prior sex convictions, having both related and non-related victims, and a higher total number of victims align with characteristics associated with sexual recidivism. Frequent substance abuse and a history of suicide attempts do not mirror previous findings regarding sexual recidivism. These findings present new information regarding the civil commitment process of offenders being committed to the SC-SVP treatment program, characterize types of offenders committed to SC-SVP treatment program, and provide a foundation for using a computerized database in conducting sex offender research.     

Feigning incompetency to stand trial

The vulnerability of competency to stand trial instruments to malingering was previously unexamined. In this study, the Georgia Court Competency Test (GCCT) was administered to offenders asked to feign incompetency; their results were compared to controls and pretrial defendants (both competent and incompetent). Offenders appeared to be able to simulate incompetency and tended to score lower on the GCCT than their truly incompetent counterparts. For the detection of simulators, a newly developed Atypical Presentation scale for the GCCT showed promise. In addition, several strategies were explored that included simulators' failure of very simple items (i.e., floor effect) and variable success on items of increasing difficulty (i.e., performance curve). Optimal cutting scores are presented for forensic clinicians to screen defendants for feigned incompetency.     

Detection of malingering in competency to stand trial evaluations

A simulation design with multiple contrast groups was used to test the effectiveness of two instruments, the Structured Interview of Reported Symptoms (SIRS) and the Georgia Court Competency Test—Mississippi State Hospital (GCCT-MSH) in detecting malingering of competency to stand trial. Thirty simulators were compared with 23 incompetent defendants, 25 competent defendants, 30 offender controls, and 7 suspected malingerers on both instruments. Results revealed that the simulators and suspected malingerers scored significantly higher on all of the SIRS primary scales and significantly lower on the GCCT-MSH than the three comparison groups. The SIRS had an overall hit rate of 97.8% using three or more primary scales as the criterion for malingering. Information concerning the simulator's strategies of deception is presented.