Levati, M. Vittoria; Napel, Stefan; Soraperra, Ivan - 2014
two-urn Ellsberg experiment: one urn offers a 45% chance of winning a fixed monetary prize, the other an ambiguous chance …. Participants choose either individually or in groups of three. Group decision rules vary. In one treatment the collective choice is … observe high proportions of ambiguity averse choices in both individual and collective decision making. Although a majority of …