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Risk assessment of intimate partner violence in a police setting: reliability and predictive accuracy
Malmö University, Faculty of Health and Society (HS), Department of Criminology (KR).
2018 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The Swedish Police Authority conducts violence risk assessments in cases of intimate partner violence (IPV) using specific assessment tools. Such assessments are conducted in order to identify high-risk offenders and thereafter implement suitable interventions to prevent repeat IPV. In this thesis, two different risk assessment tools have been evaluated: The Police Screening Tool for Violent Crimes (PST-VC) and the Brief Spousal Assault Form for the Evaluation of Risk (B-SAFER, Kropp, Hart, & Belfrage, 2005; 2010). The overall aim has been to contribute to improving the knowledge on police employees’ violence risk assessment and management, specifically with regard to the predictive validity and inter-rater reliability of such assessments. In the first study, we evaluated whether the PST-VC can be used by police employees to identify high-risk cases of repeat IPV. In addition, the preventive effects of the recommended crime preventive and victim protective actions were discussed and also whether these create a confounding problem with respect to predictive validity. The results showed that the predictive accuracy of the tool was fairly weak. Further, the assessors recommended a higher level of interventions in high-risk cases, but these did not reduce the rate of repeat IPV. Study II aimed to examine the inter-rater reliability of the PST-VC and the BSAFER. Police employees conducted pairwise assessments of IPV cases using one of these tools. The tools were evaluated separately and the cases used for the assessments were different for each tool. This means that the consistency of the assessments could not be compared head-to-head across the tools. The results were nonetheless rather similar for both tools; the inter-rater reliability for the individual items was low for most of the individual factors, but was relatively high for the global risk assessments. A suggested explanation for this was that the assessors may have used their tacit knowledge, rather than the individual items, in their global risk assessments and that they shared this tacit knowledge, at least to some extent. The third study focused on the B-SAFER tool, and on the predictive accuracy of the individual items and the global risk assessments in relation to repeat IPV. The study also aimed to examine to what extent the recommended crime preventive and victim protective actions were implemented and whether these interventions had a preventive effect on repeat IPV. The predictive accuracy of the individual B-SAFER items and the global risk assessments was low overall. The majority of the recommended interventions were not implemented, and they did not prevent repeat IPV. The final study (IV) took the form of a systematic literature study with the aimof evaluating the predictive accuracy of IPV risk assessments conducted bypractitioners in different settings, with IPV recidivism as the outcome measure.The number of studies that fulfilled the inclusion criteria was small (N= 11).One of these studies was conducted in a treatment setting, while all the otherswere conducted in criminal justice settings. The predictive accuracy for theglobal risk assessments ranged from low to medium, and the role of treatmentor other interventions to prevent repeat IPV had been analyzed in one way orthe other in eight of the studies. However, there was no consistency withregard to the importance of the interventions for repeat IPV.In summary, the predictive accuracy of the police employees’ IPV riskassessments was rather low, and the same applied to the inter-rater reliabilityfor most of the individual items included in the tools. The level of consistencywas higher, however, for the global risk assessments. The IPV preventiveinterventions were not effective in preventing repeat IPV. The predictivevalidity of IPV risk assessments conducted in other settings was found to besimilar, but results regarding the potential mediating role of interventions weremixed.

Place, publisher, year, edition, pages
Malmö university, Faculty of Health and Society , 2018. , p. 98
Series
Malmö University Health and Society Dissertations, ISSN 1653-5383 ; 2018:4
National Category
Social Sciences
Identifiers
URN: urn:nbn:se:mau:diva-7359DOI: 10.24834/2043/24791Local ID: 24791ISBN: 9789171048981 (print)ISBN: 9789171048998 (print)OAI: oai:DiVA.org:mau-7359DiVA, id: diva2:1404274
Note

Paper IV in dissertation as manuscript.

Available from: 2020-02-28 Created: 2020-02-28 Last updated: 2024-03-19Bibliographically approved
List of papers
1. Assessing and managing risk for intimate partner violence: Police employees’ use of the Police Screening Tool for Violent Crimes in Scania
Open this publication in new window or tab >>Assessing and managing risk for intimate partner violence: Police employees’ use of the Police Screening Tool for Violent Crimes in Scania
2017 (English)In: Journal of Scandinavian Studies in Criminology and Crime Prevention, ISSN 1404-3858, E-ISSN 1651-2340, Vol. 18, no 1, p. 84-92Article in journal (Refereed)
Abstract [en]

Relapse into intimate partner violence (IPV) can potentially be predicted and counter-measures applied. This study examines the predictive validity of a violence risk assessment tool: the Police Screening Tool for Violent Crimes (PST-VC) among a sample of 65 offenders. All PST-VC assessments regarding IPV that were conducted at the Scania police department in 2010 were included in the sample. Follow-up time was 16–28 months, and all reported incidents with the same victim and suspected offender were recorded. The PST-VC demonstrated limited effect in the ability to identify high-risk offenders and predict repeat victimization. Interventions against the offender and victim protective actions were more often recommended in high-risk cases but did not lower the number of IPV relapses. The study suggests that the PST-VC is not a promising instrument.

Place, publisher, year, edition, pages
Taylor & Francis, 2017
Keywords
intimate partner violence, violence risk assessment, police, victims, interventions, crime prevention
National Category
Social Sciences
Identifiers
urn:nbn:se:mau:diva-15252 (URN)10.1080/14043858.2016.1260333 (DOI)2-s2.0-85002216167 (Scopus ID)21718 (Local ID)21718 (Archive number)21718 (OAI)
Available from: 2020-03-30 Created: 2020-03-30 Last updated: 2024-02-05Bibliographically approved
2. The Inter-Rater Reliability of Violence Risk Assessment Tools Used by Police Employees in Swedish Police Settings
Open this publication in new window or tab >>The Inter-Rater Reliability of Violence Risk Assessment Tools Used by Police Employees in Swedish Police Settings
2017 (English)In: Nordisk Politiforskning, ISSN 1894-8693, Vol. 4, no 1, p. 9-28Article in journal (Refereed)
Abstract [en]

Risk assessments are used by the police in order to identify the need for victim protection. The aim of this study was to examine the inter-rater reliability of two violence risk assessment tools; the Police Screening Tool for Violent Crimes (PST-VC) and the Brief Spousal Assault Form for the Evaluation of Risk (B-SAFER), used by police employees in two different police authorities in Sweden. The inter-rater agreement was evaluated for both tools, with respect to global risk assessments, recommended protective actions and risk- and victim vulnerability factors. The main results showed that the inter-rater agreement was highest for the global assessments and widely varying, from very low to fairly high, for the structured variables. The fairly high reliability for the global risk assessments was most likely due to shared assumptions (heuristics, tacit knowledge) among the assessors rather than being based on the information obtained by the tools.

Place, publisher, year, edition, pages
Universitetsforlaget, 2017
Keywords
Violence risk assessments, crime prevention, police, inter rater reliability
National Category
Social Sciences
Identifiers
urn:nbn:se:mau:diva-15144 (URN)10.18261/issn.1894-8693-2017-01-03 (DOI)22699 (Local ID)22699 (Archive number)22699 (OAI)
Available from: 2020-03-30 Created: 2020-03-30 Last updated: 2022-12-07Bibliographically approved
3. Police employees' violence risk assessments: the predictive validity of the B-SAFER and the significance of protective actions
Open this publication in new window or tab >>Police employees' violence risk assessments: the predictive validity of the B-SAFER and the significance of protective actions
2018 (English)In: International Journal of Law and Psychiatry, ISSN 0160-2527, E-ISSN 1873-6386, Vol. 56, p. 71-79Article in journal (Refereed)
Abstract [en]

Violence risk assessment and management is conducted in police settings in order to prevent repeat victimization. One of the most frequently used violence risk assessment tools in this specific context is called the Brief Spousal Assault Form for the Evaluation of Risk (B-SAFER), which focuses on intimate partner violence (IPV). The present study examines B-SAFER assessments conducted by police employees, related protective actions and repeat IPV crimes in order to study: 1) to what extent risk- and victim vulnerability factors in the B-SAFER predicted global risk assessments, 2) the predictive accuracy of each B-SAFER item and the global risk assessments with regard to repeat IPV, 3) to what extent recommended protective actions were implemented and 4) the preventive effect of the implemented protective actions on repeat IPV. There were a large number of missing cases in the assessments and the risk and victim vulnerability factors only contributed to the global risk assessments to a minor extent. The predictive validity was low overall, few protective actions were implemented and those which were actually implemented did not appear to prevent repeat IPV. The continuous education and training of assessors is required to improve the work of violence risk assessment and management in police settings.

Place, publisher, year, edition, pages
Elsevier, 2018
Keywords
violence, risk assessment, police, IPV, B-Safer
National Category
Social Sciences
Identifiers
urn:nbn:se:mau:diva-14565 (URN)10.1016/j.ijlp.2017.09.001 (DOI)000424181700010 ()28954698 (PubMedID)2-s2.0-85029756745 (Scopus ID)23637 (Local ID)23637 (Archive number)23637 (OAI)
Available from: 2020-03-30 Created: 2020-03-30 Last updated: 2024-02-05Bibliographically approved
4. The Predictive Validity of Intimate Partner Violence Risk Assessments Conducted by Practitioners in Different Settings: a Review of the Literature
Open this publication in new window or tab >>The Predictive Validity of Intimate Partner Violence Risk Assessments Conducted by Practitioners in Different Settings: a Review of the Literature
2020 (English)In: Journal of Police and Criminal Psychology, ISSN 0882-0783, E-ISSN 1936-6469, Vol. 35, p. 115-130Article, review/survey (Refereed) Published
Abstract [en]

Intimate partner violence (IPV) is a global health problem with severe consequences. One way to prevent repeat IPVis to identify the offender’s risk of recidivism by conducting a risk assessment and then implement interventions to reduce the risk. In order to be effective, accurate risk assessments and effective interventions are required. Practitioners in different settings are conducting IPV risk assessments, but the predictive validity of practitioners’ IPV assessments has not been studied via a comprehensive literature search. This is the overall aim of the present study. The literature search was conducted in five different databases and at three different publisher sites. The selection of studies was based on nine different inclusion and exclusion criteria. The number of studies that fulfilled the criteria was unexpectedly small (N = 11). One of the studies was conducted in a treatment setting, the others in criminal justice settings. The predictive accuracy for the global risk assessments ranged from low to medium. The role of treatment or other interventions to prevent repeat IPV had been analyzed in one way or another in eight of the studies. There is a knowledge gap, the reasons of which are discussed.

Place, publisher, year, edition, pages
Springer, 2020
Keywords
Intimate partner violence, Criminal justice settings, Violence risk assessment, Predictive validity
National Category
Social Sciences
Identifiers
urn:nbn:se:mau:diva-874 (URN)10.1007/s11896-019-09343-4 (DOI)000541810600001 ()2-s2.0-85070352922 (Scopus ID)29622 (Local ID)29622 (Archive number)29622 (OAI)
Available from: 2020-02-27 Created: 2020-02-27 Last updated: 2024-02-06Bibliographically approved

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