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Offenders with intellectual disabilities
Published in John C. Gunn, Pamela J. Taylor, Forensic Psychiatry, 2014
Pamela J Taylor, William R Lindsay, Gregory O’Brien, John L Taylor
Despite the importance of anger and aggression problems for people with intellectual disability, literature on reliable and valid measures of these phenomena in this population is sparse (Taylor, 2002). Studies by Benson and Ivins (1992) and Rose and West (1999) have indicated that a modified self-assessment measure of anger reactivity (the Anger Inventory) has some limited reliability and validity with people with intellectual disability. Oliver et al. (2007) reported that the Modified Overt Aggression Scale (MOAS; Sorgi et al., 1991), an informant-rated measure of the frequency and severity of aggression (verbal and physical against self, others and property), had high levels of inter-rater reliability when used with a small number of people with intellectual disability as part of a treatment outcome study.
Cross-Cultural Violence Risk Assessment: Adapting the HCR-20V3 for Incarcerated Offenders in Mexico
Published in International Journal of Forensic Mental Health, 2023
Alicia Nijdam-Jones, Eric García-López, Libertad Merchan Rojas, Aura Ruiz Guarneros, Barry Rosenfeld
Institutional violence was quantified using the Spanish translation (Arbach, 2007; Arbach & Andrés-Pueyo, 2005) of the Modified Overt Aggression Scale (MOAS, Kay et al., 1988), a clinical tool to quantify the severity and frequency of aggressive behavior. Data on institutional violence was coded using the MOAS based on information gathered from three sources: (a) prison guards, (b) review of institutional documents, and (c) participants’ self-report during a follow-up interview 3months after the initial assessment. Institutional violence was operationalized dichotomously; violence was coded as present when at least one source reported an incident in which the participant engaged in any physical aggression or severe verbal aggression against others during the 3months following the HCR-20V3 assessment. Physical aggression was coded as present when at least one incident was coded as a 2 or higher on the MOAS (i.e., 2=Strikes, pushes, scratches, pulls hair of others without injury; 3=Attacks others, causing mild injury; 4=Attacks others, causing serious injury). Severe verbal aggression was present if at least one incident was coded as a 3 or 4 on the MOAS (e.g., 3=Impulsively threatens violence toward others, 4=Threatens violence toward others or self repeatedly or deliberately).
Type and Severity of Intimate Partner Violence in Offenders with and without ADHD
Published in International Journal of Forensic Mental Health, 2020
Nannet Buitelaar, Jocelyne Posthumus, Denise Bijlenga, Robert Ferdinand, Jan Buitelaar
An adapted version of The Modified Overt Aggression Scale (MOAS) (Kay, Wolkenfeld, & Murrill, 1988) was scored by the clinician who conducted the intake of the patient to have a second, observational, outcome measurement of IPV. Originally, the MOAS assesses different forms of aggression in psychiatric patients. The observation scale proved to be reliable and valid (Kay et al., 1988). For this study, we adapted the MOAS to assess IPV, which resulted in a MOAS consisting of three items about IPV behaviors (psychological aggression to a partner, physical aggression to a partner, and aggressive behavior at home against objects). Items were scored on a 5-point Likert scale (ranging from 0= never to 4 = repeatedly), yielding a sum score potentially ranging from 0–12 (α=.58). Because this version of the MOAS had not been validated before, we also asked the patient to fill in the MOAS to assess inter-rater reliability. The correlation between clinician rated and patient rated IPV was good, r=.62, p<.001 (n = 347). Clinicians, on average, scored somewhat higher than patients (mean (SD): 3.31(2.39) vs 2.83(2.33), p<.001; Cohen’s d = 0.20; paired sample t test).
Using biofeedback to improve emotion regulation in sexual offenders with intellectual disability: a feasibility study
Published in International Journal of Developmental Disabilities, 2019
Emma Gray, Anthony Beech, John Rose
The Modified Overt Aggression Scale (MOAS) (Sorgi et al.1991) allows for the monitoring of observed acts of aggression (verbal aggression, aggression against objects, aggression against others, and deliberate self-injury). It also allows for the subsequent rating of these behaviors according to severity and does not rely on self-report from the individual. The MOAS has been found to be a valid and reliable tool for use in adults with ID (Oliver et al.2007).