Study preregistration: Individual participant data meta-analysis: Individual differences in mediators of parenting program effects on disruptive behavior - Melendez-Torres, G.J.; Backhaus, Sophia; Gardner, Frances; Scott, Stephen; European Parenting Program Research Consortium; Salari, Raziye; Leijten, Patty; et al. (Journal of the American Academy of Child and Adolescent Psychiatry, 2024)