Knowledge Library

Psychological therapies for people with intellectual disabilities: A systematic review and meta-analysis

Jun 6, 2021

The aim of this study was to evaluate the efficacy of psychological therapies for people with intellectual disabilities (IDs) through a systematic review and meta-analysis of the current literature. A comprehensive literature search identified 143 intervention studies. Twenty-two trials were eligible for review, and 14 of these were subsequently included in the meta-analysis. Many studies did not include adequate information about their participants, especially the nature of their IDs; information about masked assessment, and therapy fidelity was also lacking. The meta-analysis yielded an overall moderate between-group effect size, g = .682, while group-based interventions had a moderate but smaller treatment effect than individual-based interventions. Cognitive-behaviour therapy (CBT) was efficacious for both anger and depression, while interventions aimed at improving interpersonal functioning were not effectual. When CBT was excluded, there was insufficient evidence regarding the efficacy of other psychological therapies, or psychological therapies intended to treat mental health problems in children and young people with IDs. Adults with IDs and concurrent mental health problems appear to benefit from psychological therapies. However, clinical trials need to make use of improved reporting standards and larger samples.

Psychopharmacological treatment of challenging behaviours in adults with autism and intellectual disabilities: A systematic review

Jun 6, 2021

Introduction

Autism is a neurodevelopmental disorder with a high co-occurrence with intellectual disability. Adults with Autism and intellectual disability have a high incidence of challenging behaviour, defined as repetitive self injurious or aggressive behaviour. We underwent a systemic review of the evidence for treating challenging behaviours in adults with Autism and intellectual disability.

Methods

A literature search was conducted using three large databases to extract studies on the treatment of challenging behaviour among adults with Autism and intellectual disability. Papers, which met this criterion, were reviewed and analysed to assess study evidence and quality.

Results

Seven articles were selected which included five agents: fluvoxamine, sertraline, clomipramine, risperidone, and ziprasidone. Randomized control studies of fluvoxamine and risperidone, provided efficacy for the treatment of challenging behaviour in adults with Autism and intellectual disability. Open label trials of sertraline, clomipramine and ziprasidone were also effective in treating challenging behaviours for this population.

Discussion

Risperidone and fluvoxamine provided the best evidence for treating challenging behaviour, and risperidone was the only medication with multiple trials showing its efficacy. Further studies are required to demonstrate the efficacy of psychopharmacology in treating challenging behaviours among adults with Autism and intellectual disability.