Final answer:
Adolescents often associate with peers who have similar socioeconomic status, which plays a significant role in the formation of their social groups outside of family influences, and social media expands their potential peer networks.
Step-by-step explanation:
According to Hollingshead's research on socialization during adolescence, peers often associate based on a variety of factors. However, when considering the influences on peer association, socioeconomic status is a significant factor. Adolescents form peer groups based on people who are similar in age and social status and who share interests. These peer groups serve as a primary agent of socialization outside of the family, offering opportunities for adolescents to develop their identities and exert independence. The influence of social media cannot be ignored as it allows young people to form connections with peers worldwide, potentially leading to echo chambers where existing beliefs are reinforced. Moreover, parental influence plays a balancing role alongside peer associations in adolescents' lives.