Introduction -- Learning -- Three distinctions -- Sex Ratios: The gold standard for using game theory -- Hawk-Dove and Rights -- Costly Signaling and Aesthetics -- Buried Signals and Modesty -- Evidence Games and Spin -- Motivated Reasoning -- The repeated Prisoner's Dilemma and Altruism --...

We develop, and experimentally test, models of informal agreements. Agents are assumed to be honest but suffer costs of overcoming temptations. We extend two classical bargaining solutions -- split-the-difference and deal-me-out -- to this informal agreement setting. For each solution there are...