Abstract

This study explores the normative development of problem behaviors in children and adolescents, examining how these behaviors manifest and evolve across different developmental stages. Utilizing a longitudinal design, data were collected from a diverse sample of 500 children and adolescents aged 6 to 18 years through surveys, behavioral assessments, and parent interviews. The findings reveal distinct trajectories of problem behaviors, including externalizing and internalizing behaviors, with notable variations based on age, gender, and socioeconomic background. Additionally, the study identifies critical periods of vulnerability where interventions may be most effective. By highlighting normative patterns of problem behavior development, this research aims to inform parents, educators, and mental health professionals about expected behaviors at various ages and the importance of early intervention strategies.