Background: Aggressive incidents are common in people with intellectual disabilities. Therefore, we aimed to assess whether supplementation of multivitamins, minerals, and omega-3 fatty acids (FA) reduces aggressive incidents. Methods: We conducted a randomised, triple blind, placebo controlled, single crossover intervention trial. People with…

Background: Aggressive behaviour is prevalent in people with intellectual disabilities. To understand the aetiology, it is important to recognize factors associated with the behaviour. Method: A systematic review was conducted and included studies published between January 2002 and April 2017 on the association of behavioural, psychiatric and…

Background: Mindfulness interventions have been shown to ameliorate stress in support staff working with people with intellectual disabilities. This review aimed to explore what impact mindfulness interventions for staff have on their care and support behaviours, and on the experiences of people with intellectual disabilities receiving support.…

Background: Aggressive behaviour (AB) and non-suicidal self-injury (NSSI) are common in people with mild intellectual disability or borderline intellectual functioning, leading to adverse consequences for themselves and those around them. Method: We investigated the relationship between AB (both total and physical in particular) and NSSI and risk…

Background: This study examines associations between group climate, aggressive incidents and coercive measures in adults with mild intellectual disability or borderline intellectual functioning (MID-BIF) of a secure forensic setting. Method: Participants (N = 248) were interviewed about their perception of group climate utilizing the Group Climate…

Background: Longitudinal research is needed to strengthen evidence for risk factors for challenging behaviour in children with intellectual disabilities and to understand patterns of change over time. Methods: Data on challenging behaviour were collected for 225 students in one school over four annual time points and a range of potential risk…

Background: Structured assessments have been shown to assist professionals to evaluate the risk of aggression in secure services for general offender populations and more recently among adults with intellectual disabilities. There is a need to develop intellectual disability sensitive measures for predicting risk of aggression in community…

Background: One of the most extensively tested risk assessment instruments in offenders with an intellectual disability (OIDs) is the Violence Risk Appraisal Guide (VRAG). The purpose of this prospective study was to test the ability of this instrument to predict institutional aggression in OIDs. Method: VRAG scores were collected for 52 OIDs, and…

Background: There is limited research into the nature and aetiology of temper outbursts in people with intellectual disabilities. In this study, we describe the phenomenology and environmental context of temper outbursts in Lowe syndrome, a rare genetic syndrome in which outbursts are purportedly frequent. Method: A temper outburst interview (TOI)…

Background: In the UK, people with intellectual disabilities who exhibit aggressive behaviour often receive community-based specialist health services from a community learning disability team (CLDT). Our aim was to estimate costs associated with this provision and to identify predictors of higher costs. Method: Costs were estimated for 60 adults…

Background: There is growing evidence of the effectiveness of cognitive behavioural therapy to treat anger in offenders with intellectual disabilities. The aim is to lower anger levels; the rationale is that this will reduce recidivism. However, the hypothesis that anger levels amongst offenders are higher than non-offenders has not been tested.…

Background: Previous studies of anger management in people with intellectual disability failed to control for the effects of the number of provocative stimuli presented and lacked direct measures of behaviour and treatment integrity data. Methods: This experiment systematically assessed and presented discriminative stimuli for aggressive…

Background: There is an established evidence base concerning the use of anger management interventions with violent offenders who have intellectual disabilities. However, there has been limited research investigating the role of social cognitive factors underpinning problems of aggression. Psychosocial sources of aggression in the non-disabled…

Objectives: To describe the rates of anti-social behaviour (ASB) among adolescents with/without mild/moderate intellectual disability (MMID). To estimate whether any differences could be attributable to differences in exposure to extraneous risk factors. Design: Secondary analysis of the Longitudinal Study of Young People in England. Methods:…

Background: Obsessive-compulsive (O-C) traits, and excessive food intake are well known behavioural manifestations among individuals with Prader-Willi Syndrome (PWS). Other unwanted behaviours are also frequently observed, but they need a more specific investigation, especially in the adult population. Methods: The behaviour of 31 PWS adults was…