Families develop their own communication patterns within a framework of shared cultural norms. Family members become caught in predictable life patterns through their interactions, but each family also develops unique communication codes based on members' experiences. Communication serves to create a family's social reality by establishing shared meanings and negotiating relationships. Dialectical tensions exist between autonomy and connection, openness and closeness, and other polarities that are managed through family communication. Cohesion and adaptability are also shaped by communication, determining the closeness of family bonds and the family's flexibility in leadership, roles and rules.