The document discusses several theories around youth culture and sexuality: 1) Erikson and Parsons' theories discuss adolescence as a time of identity development and transitioning from reliance on parents to autonomy through dependence on peer groups. 2) Cohen and Hebdige view youth subcultures as reactions to social forces and the dominant adult culture, with media and ideology influencing the construction and labeling of subcultures. 3) Butler and Foucault suggest that sexuality and gender identities are socially constructed through regulatory forces that determine what possibilities appear natural and coherent. Representations of sexuality in media are shaped by these dominant ideologies.