Parent-Child Interaction Therapy for Disruptive Behavior Disorders in Children Aged 2–7 Years: Long-Term Follow-Up

Abstract

Introduction: Parent-child interaction therapy (PCIT) is an evidence-based treatment for disruptive behavior disorders (DBD) in young children. However, long-term (>3 years) outcome data are limited. This systematic review examines sustainability of PCIT effects into middle childhood and adolescence.

Methods: We searched PubMed, PsycINFO, and ProQuest Dissertations for longitudinal follow-up studies (≥3 years post-PCIT completion) of children aged 2–7 years with DBD (oppositional defiant disorder, conduct disorder) at baseline. Primary outcomes: child behavior problems (Child Behavior Checklist Externalizing, CBCL-EXT), parenting stress, and DBD diagnosis. Random-effects meta-analysis of pre-post effect sizes.

Results: Eight studies (n=652 children) with follow-up duration 3–10 years (mean 5.2 years) were included. At follow-up, large sustained improvements from pre-treatment were maintained: CBCL-EXT mean difference –12.3 points (95% CI –15.1 to –9.5, Cohen's d=1.2). DBD diagnosis rates fell from 89% at baseline to 24% at follow-up (p<0.001). Parenting stress remained significantly lower than baseline (d=0.9). However, compared to post-treatment (immediate after PCIT), there was modest decay (CBCL-EXT increased by 2.8 points, p=0.03). Children of mothers with depression showed greater decay (4.1 points). No study reported iatrogenic effects.

Discussion: PCIT produces durable gains for childhood DBD lasting up to 10 years, though some decay occurs. The sustained effect suggests acquisition of parenting skills that persist. Maternal depression as a moderator indicates need for booster sessions. Limitations: high attrition (31% at longest follow-up), predominantly white samples.

Conclusions: Parent-child interaction therapy confers long-term benefits for young children with disruptive behavior disorders. Booster sessions may benefit families with maternal depression.