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" Youth development is an interdisciplinary field that draws broadly on different social sciences to understand children and adolescents (Larson, 2000). It embraces an explicit developmental stance: Children and adolescents are not miniature adults, and they need to be understood on their own terms. Youth development also emphasizes the multiple contexts in which development occurs. Particularly influential as an organizing framework has been Bronfenbrenner’s (1977, 1979, 1986) ecological approach, which articulates different contexts in terms of their immediacy to the behaving individual. So, the microsystem refers to ecologies with which the individual directly interacts: family, peers, school, and neighborhood. The mesosystem is Bronfenbrenner’s term for relationships between and among various microsystems. The exosystem is made up of larger ecologies that indirectly affect development and behavior, like the legal system, the social welfare system, and mass media. Finally, the macrosystem consists of broad ideological and institutional patterns that collectively define a culture. There is the risk of losing the individual amid all these systems, but the developmental perspective reminds us that different children are not interchangeable puppets. Each young person brings his or her own characteristics to life, and these interact with the different ecologies to produce behavior. Youth development "
― , Character Strengths and Virtues: A Handbook and Classification