What is the primary role of peer groups in influencing individual behavior during adolescence?

During adolescence, peer groups play a crucial role in shaping how young people behave and make decisions. This is a time when teenagers start to seek independence and often look to their friends for guidance on what is considered cool or acceptable. For example, if a teenager's friends are into sports, they might start participating in sports too, even if they weren't interested before. The opinions and actions of peers can strongly influence choices about everything from clothing and music to more serious matters like smoking or studying. Overall, peer groups provide a sense of belonging and can significantly impact a teenager's values and actions as they navigate this important stage of life.