Dialectical behavior therapy (DBT) is an evidence-based intervention that aims to reduce maladaptive behavior by facilitating development of emotion regulation, with support for use with diagnostically diverse adolescents. We conducted a meta-analysis evaluating change in externalizing symptoms among adolescents in DBT-based interventions across 17 studies (with 25 data points). Results indicate that interventions have a small-to-medium effect in reducing externalizing symptoms (Hedge's g = −0.499, 95% CI [−0.683, −0.315], p , .001). Greater intervention duration was associated with greater decrease in symptoms (slope = −0.014, Z = −2.312, SE = 0.006, p = .021), though this finding was no longer significant following removal of an outlier. No other moderators were significant ( ps range: .182-.862). Findings provide meaningful information about the utility of DBT-based interventions for externalizing problems as currently delivered among adolescents.
Public Health Significance StatementThis meta-analysis suggests that dialectical behavior therapy-based interventions are a useful approach for reducing externalizing symptoms (such as aggression and defiance) among adolescents. Other factors, such as intervention setting, protocol modifications, study design, number of sessions, and participant age, did not moderate the degree of change in externalizing symptoms.