Nash famously showed that power differences across players in game theoretic models can translate into advantages in bargaining scenarios.  In this talk, O’Connor will discuss joint work with Justin Bruner where they explore how power, hashed out in several different ways, can lead to bargaining advantage in evolving social populations.  She ill show how these models can inform the emergence of norms of collaboration across hierarchies in academia, and other bargaining norms in populations with more and less powerful groups.