In this article, we address three questions concerning the long-term effects of parenting-focused preventive interventions: 1) Do prevention programs promote effective parenting in families facing normative stressors as well as those facing frequent adversity? 2) Do parenting programs prevent children's long-term problems? 3) Do changes in parenting mediate long-term effects of programs? We address these questions by summarizing evidence from 22 programs with randomized trials and followups of three years or longer. We describe in more detail two interventions for divorced and bereaved families, suggesting that they prevent a range of problems and promote a range of developmental competencies over a prolonged period. Program effects to strengthen parenting mediated many of these long-term outcomes.
Keywords: long-term effect; parenting programs; prevention.