“…Child welfare opinion leaders have identified evidence‐based behavioural parenting interventions (EBPIs) as a critical strategy for addressing maltreatment and improving child welfare outcomes (Barth et al, ; Horwitz, Chamberlain, Landsverk, & Mullican, ), including for families affected by substance use (Barth, ). Brook and colleagues have also shown that a group‐based EBPI promotes reunification among parents affected by substances with children in foster care (Brook, Akin, Lloyd, Johnson‐Motoyama, & Yan, ; Brook, Akin, Lloyd, & Yan, ; Brook, McDonald, & Yan, ). Despite efforts to expand EBPIs to child welfare, a formidable barrier is parental engagement and service completion as an intervention has little chance of improving outcomes unless families engage in the intervention (Berliner et al, ).…”