Efficacy of brief online parent management training for parents of children with externalizing behavior problems: a pilot randomized controlled trial

= .013), reflecting a moderate effect size. Parents in the intervention group also developed more involvement in their children's everyday activities. Program adherence was high with 93% of participants completing all core modules. Gains were maintained or had continued to improve at the 1-month follow-up. These findings suggest that BIP SAMBA could be a promising early-stage intervention for families with less severe forms of EBPs. The trial was pre-registered at Clinicaltrials.gov (NCT04670185).