Desrocher, MaryRuttle, Erin Mary2025-07-232025-07-232025-04-042025-07-23https://hdl.handle.net/10315/43004Despite the serious consequences that can derive from youth fire involvement, and the extensive use of fire intervention programs, efficacy data for existing treatments is limited and includes only one randomized controlled trial (RCT). The current RCT examined the relative benefits of a multimodal, collaborative firesetting intervention by comparing a modified protocol of The Arson Prevention Program for Children (TAPP-C), which included fire service and mental health components, to the standard treatment, which is fire safety education only (FSE). The study examined change in fire-specific safety knowledge, attitudes and behaviors, and is the first to examine change across broader indices of behavioural and emotional well-being, and parenting constructs. The study sample comprised 27 fire-involved youth, aged 6-16, referred to the TAPP-C program at a large teaching hospital, and their caregiver. Caregiver-youth dyads were randomly assigned to a modified TAPP-C or FSE intervention with data collected at pre- and post-intervention, and 3-month follow-up. Results showed both interventions were effective in reducing firesetting, fire interest, and behavioural and emotional difficulties. No recidivism was reported for either group post-intervention or at 3-month follow up. Results for the parenting constructs revealed negative perceptions of the caregiver-child relationship. Preliminary results suggest fire-involvement may be associated with externalized parental locus of control (PLOC) orientation, and significant relationships were found among parental cognitions, PLOC, and perceived parental competence. Novel findings showed youth deficit in executive function (EF), and that greater EF deficit was significantly related to greater youth-reported fire-interest and behavioural difficulties. Youth participants performed poorly on an impulsivity task, suggesting great impairment in this area. Only youth who received the modified TAPP-C intervention showed significant improvement on the impulsivity task, highlighting a unique benefit for interventions including a mental health component. Finally, results showed readiness to change significantly improved post-treatment for caregivers and youth in both groups. As only the second RCT of a firesetting intervention, the results represent a significant contribution to the existing literature and establishment of best practice intervention by providing preliminary data on the relative efficacy of FSE and combined, collaborative approaches.Author owns copyright, except where explicitly noted. Please contact the author directly with licensing requests.Developmental psychologyClinical psychologyPsychologyElectronic Thesis or Dissertation2025-07-23Juvenile firesettingFire involvementTreatment outcomeInterventionProgram evaluationBehavioural difficultiesMental healthParentingExecutive functionImpulsivity