DP17578 Do Nonstrategic Considerations Matter for Behavior in Games? An Experimental Study Informed by Direct-sum Decompositions of Game
We use direct-sum decomposition proposed by Candogan et al. (2011) to decompose any normal-form finite game into the strategic and the nonstrategic components. Nash equilibrium is invariant to changes in the nonstrategic component. Mutual-Max-Sum, a new solution concept defined in this paper, depends only on the nonstrategic component, identifies the most relevant strategy profile in this component and it is invariant to changes in the strategic component. We design 3x3 games to empirically test, whether
and when, manipulations in the nonstrategic component affect individual behavior and whether Mutual-Max-Sum is behaviorally relevant. We conclude that Candogan et al. (2011)’s decomposition is informative about individual behavior in games.