Mediators of a randomized controlled trial of a preventive intervention for youth of parents with depressive disorders.

OBJECTIVE

The present study assessed two theory-driven mediators of the effects of a family group cognitive-behavioral (FGCB) preventive intervention for youth of parents with a history of major depressive disorder (MDD) or dysthymia on long-term youth psychopathology symptoms and diagnoses.

METHOD

Sample included 180 parents ( = 41.9, 89% female, 82% White, non-Hispanic) and one of their children/adolescents ages 9-15 years ( = 11.4, 49% female, 74% White, non-Hispanic). Changes in the hypothesized mediators, observations of positive parenting (Iowa Family Interaction Rating Scales) and youth secondary control coping (SCC) skills (Responses to Stress Questionnaire), were assessed at 6 months. Changes in youth psychopathology symptoms were assessed on the Child Behavior Checklist and Youth Self-Report at 18- and 24-month follow-ups and MDD diagnoses with the Kiddie Schedule for Affective Disorders and Schizophrenia at 12 and 24 months.

RESULTS

Changes in youth SCC skills (e.g., acceptance, reappraisal) after the intervention mediated the effects of the FGCB program on changes in youth internalizing and externalizing symptoms at 18- and 24-month follow-ups. Effects for changes in positive parenting behaviors as a mediator were more limited. SCC skills were further shown to mediate the effects of the FGCB intervention on MDD diagnoses from 12 to 24 months.

CONCLUSIONS

This study provides clear and strong evidence that changes in youth SCC skills mediated the long-term effects of preventive intervention for families of depressed parents. (PsycInfo Database Record (c) 2025 APA, all rights reserved).