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Biomedical subjects

M R Larose

Publications and source records attributed to M R Larose.

3 recordsLinked to original sources

Prediction of recidivism in extrafamilial child molesters based on court-related assessments.

One hundred ninety-two convicted extrafamilial child molesters were followed for an average of 7.8 years after their conviction. The percentage of men who had committed a sexual, a violent, or any criminal offense by the 12th year was 15.1, 20.3, and 41.6, respectively. The sexual recidivists, compared with the nonrecidivists; demonstrated more problems with alcohol and showed greater sexual arousal to assaultive stimuli involving children than to mutually consenting stimuli with children. The violent recidivists, compared with the nonrecidivists, were more likely to have a history of violence in the families in which they were raised and were rated significantly more psychopathic on the Psychopathy Checklist--Revised (PCL-R). They also showed more sexual arousal to stimuli depicting mutually consenting sexual interactions with children than to adult stimuli. In terms of any criminal recidivism, recidivists were younger, had completed fewer years of school, and were raised in psychologically more harmful family environments compared with nonrecidivists. They also reported that, before 16 years of age, they were more likely to have been physically abused and were more likely to have been removed from their homes compared to those that did not recidivate. In addition, recidivists demonstrated more general hostility on the Buss-Durkee Hostility Inventory and were rated significantly more psychopathic on the PCL-R. The phallometric assessments revealed, that the criminal recidivists, compared to the nonrecidivists, showed more sexual arousal to stimuli depicting coercive sexual activity with children than consenting sexual activities with children. In addition, they showed more sexual arousal to scenes depicting adult rape then adult mutually consenting sex. Finally, the recidivists also had more charges or convictions for violence and any criminal acts. The small number of significant differences between recidivists and nonrecidivists in the sexual and violent categories precluded an attempt to determine which combination of factors meaningfully predicted reoffending. However, for criminal recidivism, a stepwise discriminant function analysis to assess the combination of factors that most successfully distinguished between groups in terms of criminal recidivism was significant, with subjects' age, total number of criminal convictions, and pedophile assault index being retained for optimal prediction. The procedure correctly classified 70.6% of the original group, 82.8% of the nonrecidivists, and 52.6% of the recidivists. PCL-R Total Score alone was equally successful in a similar discriminant function.

Adolescent↗

Recidivism in convicted rapists.

Factors associated with recidivism in 86 men convicted of rape were studied. These men had been out of prison for up to 12 years (mean, 7.6 years). The majority of the men had been assessed in a sexual behaviors clinic of a general psychiatric hospital at the time of their conviction. Almost 50 percent of the group had committed some offense by the fifth year out of prison. The recidivism rates for sexual, violent, and any criminal recidivism were 16 percent, 26 percent, and 53 percent, respectively. The ability to predict sexual and violent recidivism in this population of rapists was rather poor. More sexual recidivists, compared with nonrecidivists, had been removed from their family home prior to age 16. Violent recidivists compared with nonrecidivists were also more frequently removed from their homes prior to 16 years of age, and they showed significantly more problems with alcohol. In terms of any criminal recidivism, recidivists compared with nonrecidivists were younger and scored higher on the Michigan Alcohol Screening Test (MAST). They also had more previous charges and/or convictions for violent offenses and more charges and/or convictions for any criminal acts. The combination of age and MAST scores was able to predict 92.6 percent of the nonrecidivists and 53.3 percent of the recidivists. The outstanding feature of the total group of rapists was their poor sexual adjustment as indicated on the Derogatis Sexual Functioning Inventory, on which they scored at approximately the seventh percentile of the population at large. There was also an indication that rapists have problems with hostility, as measured by the Buss-Durkee Hostility Inventory. Furthermore, the range of scores on the MAST indicated that the total group of rapists has serious problems with alcohol. The inability of phallometric assessments and psychopathy as measured by the Psychopathy Checklist-R to predict recidivism are discussed.

Adult↗

Homicidal sex offenders: psychological, phallometric, and diagnostic features.

Homicidal sex offenders represent an understudied population in the forensic literature. Forty-eight homicidal sex offenders assessed between 1982 and 1992 were studied in relation to a comparison group of incest offenders. Historical features, commonly used psychological inventories, criminal histories, phallometric assessments, and DSM diagnoses were collected on each group. The homicidal sex offenders, compared with the incest offenders, self-reported that they had more frequently been removed from their homes during childhood and had more violence and forensic psychiatric contact in their histories. On the self-report psychological inventories, the homicidal sex offenders portrayed themselves as functioning significantly better in the areas of sexuality (Derogatis Sexual Functioning Inventory) and aggression/hostility (Buss-Durkee Hostility Inventory). However, on the Psychopathy Checklist-Revised (PCL-R), researchers rated the homiciders significantly more psychopathic than the incest offenders on Factor 1 (personality traits) and Factor 2 (antisocial history). Police records revealed the homicidal subjects also had been charged or convicted of more violent and nonviolent nonsexual offenses. The phallometric assessments indicated that the homicidal sex offenders demonstrated higher levels of response to pedophilic stimuli and were significantly more aroused to stimuli depicting assaultive acts to children, relative to the incest offenders. Despite the homiciders' self-reports of fairly good psychological functioning, DSM-III diagnoses reliably discriminated between the groups. A large number of homicidal sex offenders were diagnosed as suffering from psychosis, antisocial personality disorder, paraphilias, sexual sadism, sexual sadism with pedophilia, and substance abuse. Seventy-five percent of the homicidal sex offenders had three or more diagnoses compared with six percent of the incest offenders. The article addresses the role of "hard" versus "soft" measures in the assessment and treatment of violent sex offenders. In addition, the usefulness of phallometric assessments and the PCL-R and its subscales are considered.

Adolescent↗