Introduction; A.Innocenti & P.Sbriglia Psychological Games: Theoretical Findings and Experimental Evidence; G.Attanasi & R.Nagel Risk Aversion, Demographics and Unobserved Heterogeneity: Evidence from the Italian TV Show 'Affari Tuoi'; F.Botti, A.Conte, D.Di Cagno & C.D'Ippoliti Unpacking Experimental Discount Rates: Impatience, Uncertainty, and Credit Constraints; M.Casari Cooperation as Selfish Reciprocity in the Centipede; F.Farina & P.Sbriglia Best Responding to What? A Behavioral Approach to One Shot Play in 2x2 Games; A.Gallice Gender Differences in Altruism: An Experimental Study; A.Innocenti & M.G.Pazienza Inequality Aversion and Stochastic Decision-making: Experimental Evidence from Zimbabwean Villages after Land Reform; S.Kohler Introducing Social Norms in Game Theory; R.López-Pérez Inequality or Strategic Uncertainty? An Experimental Study on Incentives and Hierarchy; D.López-Pintado, G.Ponti & E.Winter On the Absorbability of the Guessing Game Theory: A Theoretical and Experimental Review; A.Morone, S.Sandri & T.Uske Norm Compliance: The Contribution of Behavioral Models; L.Sacconi & M.Faillo Alternating Cooperation Strategies in a Route Choice Game: Theory, Experiments, and Effects of a Learning Scenario; H.-U.Stark, D.Helbing, M.Schönhof & J.A.Holyst