Brent Simpson, Eriksson, K., Irina Vartanova, Strimling, P., J. Paola Merchán Tamayo, Khalid Ahmed Abdi...Paul A.M. Van Lange (2026). How Norms Depend on the Presence and Status of Observers: The Relational Contingency of Everyday Behaviors in 90 Societies. American Sociological Review.