📖 Passage: A research team conducted a longitudinal study on social development in adolescents. Participants were assessed annually from ages 12 to 18 on their peer relationships, family dynamics, and extracurricular involvement. At age 12, most participants relied primarily on parental guidance for decision-making. By age 15, peer influence became more dominant in shaping social behavior and identity. Researchers noted that students involved in structured extracurricular activities, such as sports teams or debate clubs, showed stronger self-regulation and more prosocial behavior over time compared to those with no such involvement. In the final year of the study, adolescents who had experienced secure attachment with caregivers during childhood reported higher levels of self-esteem and lower levels of risky behavior. The researchers concluded that early attachment styles and continued participation in structured social environments played a significant role in adolescent psychosocial development. ❓Question: Based on the study’s findings, which theoretical framework best explains the influence of early attachment and structured social environments on adolescent behavior?