Prospective dynamic assessment of risk of sexual reoffending in individuals with an intellectual disability and a history of sexual offending behaviour

Rachael E. Lofthouse, William R. Lindsay, Vasiliki Totsika, Richard P. Hastings, Douglas BOER, James L. Haaven

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Background, The purpose of the present study was to add to the literature on the predictive accuracy of a dynamic intellectual disability specific risk assessment tool.MethodA dynamic risk assessment for sexual reoffending (ARMIDILO-S), a static risk assessment for sexual offending (STATIC-99), and a static risk assessment for violence (Violence Risk Appraisal Guide [VRAG]) were completed for a sample of 64 adult males with an intellectual disability.ResultsThe dynamic risk assessment for sexual offenders with an intellectual disability resulted in the best prediction of sexual reoffending (ARMIDILO-S area under the curve (AUC) = 0.92) this was better than an established sexual offending static risk assessment (STATIC-99 AUC = 0.75). A static tool for violent reoffending, did not perform as well in this group (VRAG AUC = 0.58).ConclusionsResults suggest that dynamic variables are useful in predicting sexual reoffending with individuals with an intellectual disability, confirming previous findings. The ARMIDILO-S is a promising dynamic risk assessment for individuals with an intellectual disability.
Original languageEnglish
Pages (from-to)394-403
Number of pages10
JournalJournal of Applied Research in Intellectual Disabilities
Volume26
Issue number5
DOIs
Publication statusPublished - 2013

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Intellectual Disability
Sexual Behavior
risk assessment
disability
Violence
Area Under Curve
violence
offender
Group

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Lofthouse, Rachael E. ; Lindsay, William R. ; Totsika, Vasiliki ; Hastings, Richard P. ; BOER, Douglas ; Haaven, James L. / Prospective dynamic assessment of risk of sexual reoffending in individuals with an intellectual disability and a history of sexual offending behaviour. In: Journal of Applied Research in Intellectual Disabilities. 2013 ; Vol. 26, No. 5. pp. 394-403.
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keywords = "Developmental delay, Dynamic risk assessment, Intellectual disability, Reoffending, Risk assessment, Sexual offending",
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Prospective dynamic assessment of risk of sexual reoffending in individuals with an intellectual disability and a history of sexual offending behaviour. / Lofthouse, Rachael E.; Lindsay, William R.; Totsika, Vasiliki; Hastings, Richard P.; BOER, Douglas; Haaven, James L.

In: Journal of Applied Research in Intellectual Disabilities, Vol. 26, No. 5, 2013, p. 394-403.

Research output: Contribution to journalArticle

TY - JOUR

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AU - Lofthouse, Rachael E.

AU - Lindsay, William R.

AU - Totsika, Vasiliki

AU - Hastings, Richard P.

AU - BOER, Douglas

AU - Haaven, James L.

PY - 2013

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AB - Background, The purpose of the present study was to add to the literature on the predictive accuracy of a dynamic intellectual disability specific risk assessment tool.MethodA dynamic risk assessment for sexual reoffending (ARMIDILO-S), a static risk assessment for sexual offending (STATIC-99), and a static risk assessment for violence (Violence Risk Appraisal Guide [VRAG]) were completed for a sample of 64 adult males with an intellectual disability.ResultsThe dynamic risk assessment for sexual offenders with an intellectual disability resulted in the best prediction of sexual reoffending (ARMIDILO-S area under the curve (AUC) = 0.92) this was better than an established sexual offending static risk assessment (STATIC-99 AUC = 0.75). A static tool for violent reoffending, did not perform as well in this group (VRAG AUC = 0.58).ConclusionsResults suggest that dynamic variables are useful in predicting sexual reoffending with individuals with an intellectual disability, confirming previous findings. The ARMIDILO-S is a promising dynamic risk assessment for individuals with an intellectual disability.

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KW - Intellectual disability

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KW - Sexual offending

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JO - Journal of Applied Research in Intellectual Disabilities

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