TY - GEN AB - Riedel and Sass (2013) study complete information normal form games in which ambiguity averse players use ambiguous randomization strategies, in addition to pure and mixed strategies. The solution concept they propose, the Ellsberg equilibrium, is a coarsening of the classical Nash equilibrium. We provide a foundation of the new equilibrium concept in the spirit of Harsanyi. We prove an extension of the Purification Theorem for 2x2 normal form games. Our result implies that any Ellsberg equilibrium of such game is the limit case of a mixed strategy equilibrium in a disturbed version of the game for which payoffs are ambiguously disturbed. DA - 2016 KW - Knightian uncertainty KW - Ellsberg games KW - Ambiguity aversion KW - Purification KW - Disambiguation LA - eng PY - 2016 SN - 0931-6558 SP - 43- TI - Disambiguation of Ellsberg equilibria in 2x2 normal form games UR - https://nbn-resolving.org/urn:nbn:de:0070-pub-29013618 Y2 - 2024-11-22T07:02:30 ER -