Linking serious sexual assaults through behaviour
In: Home Office Research Study 215
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In: Home Office Research Study 215
In: Police research series 99
In: Sexual abuse: official journal of the Association for the Treatment of Sexual Abusers (ATSA), Band 23, Heft 4, S. 419-433
ISSN: 1573-286X
Risk Matrix 2000 is a statistically derived risk-assessment instrument for use with convicted male sex offenders. It is a core element of the sex offender risk assessments carried out in England, Wales, and Scotland. This study examines its validity in a large cohort of sex offenders released from Scottish prisons. It compares 5-year outcomes with findings from the original Risk Matrix validity sample (a 1979 cohort of sex offenders in England and Wales). The instrument had moderate predictive validity and performed in a similar manner in the two studies in spite of different underlying base rates of reconviction.
In: Sexual abuse: official journal of the Association for the Treatment of Sexual Abusers (ATSA), Band 22, Heft 3, S. 266-278
ISSN: 1573-286X
Sex offenders taking part in treatment programs in 10 probations areas of England were asked to undertake polygraph testing on a voluntary basis. Over a 2-year period 347 offenders attended for testing (43% of those eligible). Outcome was compared with offenders from four probation areas where polygraphy was not introduced. Case managers of polygraphed offenders reported new disclosures relevant to supervision being made in 70% of first tests, compared with 14% of case managers of nonpolygraphed offenders who reported new disclosures in the preceding months (odds ratio [OR] = 14.4, confidence interval [CI] = 8.5, 24.5). Of the disclosures made during polygraph testing, 27% were rated as being of "medium" severity and 10% "high." Polygraph and nonpolygraph case managers reported making revisions in risk assessment with similar frequency, but nonpolygraph case managers were much more likely to consider risk to have reduced while changes in risk assessment made by polygraph case managers were usually upwards (OR = 5.0, CI = 1.7, 14.6). Case managers of polygraph offenders reported more treatment changes than case managers of the comparison group (OR = 3.1, CI = 1.6, 6.0), which were attributable to the polygraph test. Case managers rated polygraphy as "somewhat" or "very" helpful after 93% of tests for which we had information.
In: Annual review of sex research, Band 3, Heft 1, S. 201-217
ISSN: 2168-3654
In: Sexual abuse: official journal of the Association for the Treatment of Sexual Abusers (ATSA), Band 16, Heft 3, S. 209-222
ISSN: 1573-286X
In: Probation journal: the journal of community and criminal justice, Band 50, Heft 1, S. 61-64
ISSN: 1741-3079
In: Probation journal: the journal of community and criminal justice, Band 50, Heft 1, S. 59-71
ISSN: 1741-3079