The validity of two diagnostic systems for personality disorder in people with intellectual disabilities: a short report

William R. Lindsay, Anne van Logten, Robert Didden, Lesley Steptoe, John L. Taylor, Todd E. Hogue

Research output: Contribution to journalArticle

Abstract

Purpose
Over the last ten years, there has been greater interest in the diagnosis of personality disorder (PD) in people with intellectual and developmental disabilities (IDD). One important characteristic of a diagnostic system is that it should have validity as a contribution to utility. PD has been found to have a predictive relationship with violence and the purpose of this paper is to review two methods for the diagnosis of PD in offenders with IDD in order to evaluate the utility of the diagnoses.

Design/methodology/approach
In total, 212 offenders with ID were recruited from three settings – maximum-security, medium/low security and community services. Diagnoses of PD in the case files were compared with a structured system of diagnosis based on DSM-IV traits.

Findings
There were significant differences between the two systems with a significantly higher frequency of PD diagnosis in the community forensic setting in the structured assessment system. There was no relationship between the case files diagnosis of PD and future violence but there was a significant predictive relationship between the structured diagnosis of PD and future violence with an AUC=0.62.

Research limitations/implications
As with all such studies, the research is limited by the quality of the case files available to the researchers.

Practical implications
Only the structured assessment of PD had utility for the prediction of violence. Reasons for the differences between the systems are discussed and suggestions made on how a diagnosis of PD can be structured for the busy clinician.

Social implications
The accurate diagnosis of PD has important implications since the PD is a crucial addition to any violence risk evaluation.

Originality/value
This study is the first of its kind to review the way in which clinicians assess PD.
Original languageEnglish
Pages (from-to)104-110
Number of pages7
JournalJournal of Intellectual Disabilities and Offending Behaviour
Volume8
Issue number3
Early online date19 Oct 2017
DOIs
Publication statusPublished - 11 Dec 2017

Fingerprint

Personality Disorders
Disabled Persons
Intellectual Disability
Violence
Developmental Disabilities
Social Welfare
Research
Diagnostic and Statistical Manual of Mental Disorders
Area Under Curve
Research Personnel

Cite this

Lindsay, William R. ; van Logten, Anne ; Didden, Robert ; Steptoe, Lesley ; Taylor, John L. ; Hogue, Todd E. / The validity of two diagnostic systems for personality disorder in people with intellectual disabilities : a short report. In: Journal of Intellectual Disabilities and Offending Behaviour. 2017 ; Vol. 8, No. 3. pp. 104-110.
@article{df4953f5573d46c9839f64ddd4a48011,
title = "The validity of two diagnostic systems for personality disorder in people with intellectual disabilities: a short report",
abstract = "PurposeOver the last ten years, there has been greater interest in the diagnosis of personality disorder (PD) in people with intellectual and developmental disabilities (IDD). One important characteristic of a diagnostic system is that it should have validity as a contribution to utility. PD has been found to have a predictive relationship with violence and the purpose of this paper is to review two methods for the diagnosis of PD in offenders with IDD in order to evaluate the utility of the diagnoses.Design/methodology/approachIn total, 212 offenders with ID were recruited from three settings – maximum-security, medium/low security and community services. Diagnoses of PD in the case files were compared with a structured system of diagnosis based on DSM-IV traits.FindingsThere were significant differences between the two systems with a significantly higher frequency of PD diagnosis in the community forensic setting in the structured assessment system. There was no relationship between the case files diagnosis of PD and future violence but there was a significant predictive relationship between the structured diagnosis of PD and future violence with an AUC=0.62.Research limitations/implicationsAs with all such studies, the research is limited by the quality of the case files available to the researchers.Practical implicationsOnly the structured assessment of PD had utility for the prediction of violence. Reasons for the differences between the systems are discussed and suggestions made on how a diagnosis of PD can be structured for the busy clinician.Social implicationsThe accurate diagnosis of PD has important implications since the PD is a crucial addition to any violence risk evaluation.Originality/valueThis study is the first of its kind to review the way in which clinicians assess PD.",
author = "Lindsay, {William R.} and {van Logten}, Anne and Robert Didden and Lesley Steptoe and Taylor, {John L.} and Hogue, {Todd E.}",
year = "2017",
month = "12",
day = "11",
doi = "10.1108/JIDOB-04-2015-0004",
language = "English",
volume = "8",
pages = "104--110",
journal = "Journal of Intellectual Disabilities and Offending Behaviour",
issn = "2050-8824",
publisher = "Emerald Group Publishing Ltd.",
number = "3",

}

The validity of two diagnostic systems for personality disorder in people with intellectual disabilities : a short report. / Lindsay, William R.; van Logten, Anne; Didden, Robert; Steptoe, Lesley; Taylor, John L.; Hogue, Todd E.

In: Journal of Intellectual Disabilities and Offending Behaviour, Vol. 8, No. 3, 11.12.2017, p. 104-110.

Research output: Contribution to journalArticle

TY - JOUR

T1 - The validity of two diagnostic systems for personality disorder in people with intellectual disabilities

T2 - a short report

AU - Lindsay, William R.

AU - van Logten, Anne

AU - Didden, Robert

AU - Steptoe, Lesley

AU - Taylor, John L.

AU - Hogue, Todd E.

PY - 2017/12/11

Y1 - 2017/12/11

N2 - PurposeOver the last ten years, there has been greater interest in the diagnosis of personality disorder (PD) in people with intellectual and developmental disabilities (IDD). One important characteristic of a diagnostic system is that it should have validity as a contribution to utility. PD has been found to have a predictive relationship with violence and the purpose of this paper is to review two methods for the diagnosis of PD in offenders with IDD in order to evaluate the utility of the diagnoses.Design/methodology/approachIn total, 212 offenders with ID were recruited from three settings – maximum-security, medium/low security and community services. Diagnoses of PD in the case files were compared with a structured system of diagnosis based on DSM-IV traits.FindingsThere were significant differences between the two systems with a significantly higher frequency of PD diagnosis in the community forensic setting in the structured assessment system. There was no relationship between the case files diagnosis of PD and future violence but there was a significant predictive relationship between the structured diagnosis of PD and future violence with an AUC=0.62.Research limitations/implicationsAs with all such studies, the research is limited by the quality of the case files available to the researchers.Practical implicationsOnly the structured assessment of PD had utility for the prediction of violence. Reasons for the differences between the systems are discussed and suggestions made on how a diagnosis of PD can be structured for the busy clinician.Social implicationsThe accurate diagnosis of PD has important implications since the PD is a crucial addition to any violence risk evaluation.Originality/valueThis study is the first of its kind to review the way in which clinicians assess PD.

AB - PurposeOver the last ten years, there has been greater interest in the diagnosis of personality disorder (PD) in people with intellectual and developmental disabilities (IDD). One important characteristic of a diagnostic system is that it should have validity as a contribution to utility. PD has been found to have a predictive relationship with violence and the purpose of this paper is to review two methods for the diagnosis of PD in offenders with IDD in order to evaluate the utility of the diagnoses.Design/methodology/approachIn total, 212 offenders with ID were recruited from three settings – maximum-security, medium/low security and community services. Diagnoses of PD in the case files were compared with a structured system of diagnosis based on DSM-IV traits.FindingsThere were significant differences between the two systems with a significantly higher frequency of PD diagnosis in the community forensic setting in the structured assessment system. There was no relationship between the case files diagnosis of PD and future violence but there was a significant predictive relationship between the structured diagnosis of PD and future violence with an AUC=0.62.Research limitations/implicationsAs with all such studies, the research is limited by the quality of the case files available to the researchers.Practical implicationsOnly the structured assessment of PD had utility for the prediction of violence. Reasons for the differences between the systems are discussed and suggestions made on how a diagnosis of PD can be structured for the busy clinician.Social implicationsThe accurate diagnosis of PD has important implications since the PD is a crucial addition to any violence risk evaluation.Originality/valueThis study is the first of its kind to review the way in which clinicians assess PD.

U2 - 10.1108/JIDOB-04-2015-0004

DO - 10.1108/JIDOB-04-2015-0004

M3 - Article

VL - 8

SP - 104

EP - 110

JO - Journal of Intellectual Disabilities and Offending Behaviour

JF - Journal of Intellectual Disabilities and Offending Behaviour

SN - 2050-8824

IS - 3

ER -