Background/Objectives: The Positive Parenting Program (Triple P) is an evidence-based intervention for families including young children with neurodevelopmental disorders. Because establishing a definitive diagnosis in early childhood takes time, especially for 1–3-year-olds who have only recently shown early signs, parents often experience substantial stress. This study examines the effectiveness of the Group Triple P (GTP) program for mothers of 1–3-year-old children without a confirmed diagnosis who spent time at a community parenting support center. Methods: The participants were 41 mothers of children aged 1–3 who did not confirmed neurodevelopmental diagnosis but showed behavioral, emotional, or developmental concerns, or whose mothers reported parenting difficulties. To reflect real community practices, a non-randomized pre–post test design without a control group was adopted. Assessments were conducted at baseline, postintervention, and at a 12 weeks follow-up using the Strengths and Difficulties Questionnaire, Parenting Scale, Parenting Experience Scale, and Depression Anxiety Stress Scale. Results: GTP improved the mothers’ assessments of positive behaviors in children who may have neurodevelopmental disorders, with a medium effect size. GTP reduced dysfunctional parenting styles in mothers with a large effect size. It also enhanced mothers’ confidence and fulfilling sense in parenting, and decreased depression and stress with a medium effect size. Perceived access to parenting support improved, contributing to better parenting adaptation with a medium effect size. Conclusion: GTP may serve as an early public health intervention for mothers of young children who may have neurodevelopmental disorders by supporting maternal mental health and promoting adaptive parenting.
Masuda et al. (Sat,) studied this question.