The document discusses the origins and theories of social norms. It notes that early theorists like Durkheim, Weber, and Ogburn contributed to understanding where norms come from and how they guide behavior. Parsons further explored how members of society are socialized to norms. Later, feminist anthropologists studied norms and social control, especially regarding gender. The document contrasts philosophical, psychological, and anthropological approaches to studying norms and culture. It argues that knowledge of cultural norms can help reduce unexpected outcomes in social science and shift narratives to achieve behavior change. The example of the Albania Family Planning Project shows how understanding local norms was key to successfully promoting contraceptive use.