This document discusses gender socialization through the lenses of identity theory and identity control theory. It provides an overview of literature on how families socialize children into gender roles and identities. Specifically, it examines how gender is learned from a young age through cues from families, and how this socialization leads to the development of gendered subcultures and homophily (preference for same-sex interactions). The document argues that identity theory can help explain how gender identities form through this socialization process and are reinforced over the lifespan to maintain the social order.