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A meta-analysis of intervention effects on challenging behaviour among persons with intellectual disabilities
- Authors:
- HEYVAERT M., MAES B., ONGHENA P.
- Journal article citation:
- Journal of Intellectual Disability Research, 54(7), July 2010, pp.634-649.
- Publisher:
- Wiley
This meta analysis reviewed the distinct biological, psychotherapeutic and contextual interventions used to treat challenging behaviour among persons with ID and analysed the intervention effects and moderating variables. A literature search was conducted using the databases ERIC, PsycINFO, Web of Science and Medline. A random-effects meta-analysis was carried out, supplemented with sensitivity, subgroup, meta-regression and publication bias analyses. Eighty articles were identified, of which 30 contained sufficient data to enable statistical meta-analysis. Eighteen described a biological, 13 a psychotherapeutic and nine a contextual intervention, either applied alone or combined. The overall standardised mean difference was 0.671. As shown by sensitivity analysis, this summary effect size was robust. Assessed through subgroup and meta-regression analysis, all tested moderators showed no statistically significant association with the treatment effects. After applying several analysis techniques the authors concluded that their meta-analysis did not suffer excessively from publication bias effects. It is concluded that several biological, psychotherapeutic and contextual interventions effectively reduce challenging behaviours among persons with ID.