Feasibility and acceptability of a brief cognitive-behavioral group intervention for chronic irritability in youth.

Chronic irritability is a core feature of oppositional defiant disorder (ODD) and disruptive mood dysregulation disorder (DMDD), but few irritability-specific interventions have been tested. Existing evidence-based treatments for disruptive behavior problems offer a strong template. This pilot study was conducted to develop and evaluate a brief irritability-specific module of a validated cognitive-behavioral group intervention for children (Stop Now And Plan (SNAP) Program). Stop now and plan for irritability (I-SNAP) retained core elements of SNAP in a shortened 6-week format. Community families with irritable children (M = 8.44 years, SD = 1.42) were recruited for parent and child emotion regulation skills groups. Of 18 children enrolled (72% male), 14 completed (78%). Half of children attended all six sessions, though homework compliance was lower. All parents reported favorable impressions and would recommend I-SNAP to others. Significant improvements were seen from pre- to post-treatment across parent-reported irritability, ODD symptoms, emotion regulation, and disciplinary effectiveness. This pilot study provides initial support suggesting I-SNAP may be feasible to implement and acceptable to parents. In addition, pilot analyses demonstrated that this brief group intervention was associated with positive outcomes consistent with treatment targets. This preliminary evidence supports the need for further research to assess I-SNAP's effects on irritability relative to control groups.