Article 

DATE: 1/18/2006 
CONTACT: Frances Gardner, Dphil. 
CATEGORY: Prevention Study 
REFERENCE: Gardner, F., DPhil, and Burton, J., BA, Centre for Evidence-Based Intervention, Department of Social Policy and Social Work, University of Oxford. Klimes, I., MSc., John Radcliffe Hospital, Oxford, UK. 2006. Journal of Child Psychology and Psychiatry. 47:11. 1123-1132. 

Randomised Controlled Trial of a Parenting Intervention in the Voluntary Sector for Reducing Conduct Problems in Children: Outcomes and Mechanisms of Change 

Change in parenting skill appears to be a key mechanism for change in child behaviour. Findings have implications for feasibility of translating evidence-based programmes, even for clinically-referred conduct problems, into less specialised community settings, likely to have lower costs and be more accessible for families. 

Background: to test effectiveness of a parenting intervention (The Incredible Years), delivered in a community-based voluntary-sector organisation, for reducing conduct problems in clinically-referred children.

Methods: Randomised controlled trial, follow-up at 6, 18 months, assessors blind to treatment status. Participants - 76 children referred for conduct problems, aged 2-9, primarily low-income families, randomised to treatment vs. 6-month wait-list group. Retention was 93% at 6 months, 90% at 18 months. Interventions - Webster-Stratton Incredible Years video-based 14-week group programme. Intervention teaches cognitive-behavioural principles for managing behaviour, using a collaborative, practical, problem-solving approach. Primary outcomes - child problem behaviour by parent-report (Eyberg) and home-based direct observation; Secondary outcomes - observed positive and negative parenting; parent-reported parenting skill, confidence and depression. All measures standardised and well-validated.

Results: Group differences were tested using ANCOVA, controlling for baseline levels. Post-treatment improvements were found in child problem behaviour, by parent-report (effect size (ES) .48, p=.05) and direct observation (ES .78, p=.02); child independent play (ES .77, p=.003); observed negative (ES .74, p=.003) and positive (ES .38, p=.04) parenting; parent-reported confidence (ES .40, p=.03) and skill (ES .65, p=.01). Maternal depression did not change. Consumer satisfaction was high. At 18-month follow-up, no randomised comparison was possible. However, changes appeared to maintain at 18-month follow-up, with no significant change toward baseline level on any measure. Change in observed positive parenting appeared to mediate change in child problem behaviour.

Conclusions: Findings suggest that a group-based cognitive-behavioural parenting programme, delivered by well-trained and supervised staff can be effective in a community voluntary-sector setting, for reducing conduct problems and enhancing parenting skills. Change in parenting skill appears to be a key mechanism for change in child behaviour. Findings have implications for feasibility of translating evidence-based programmes, even for clinically-referred conduct problems, into less specialised community settings, likely to have lower costs and be more accessible for families.

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