JUDGED KNOWLEDGE AND AMBIGUITY AVERSION

Competence has recently been proposed as an explanation for the degree of ambiguity aversion. Using general knowledge questions we presented subjects with simple lotteries in which they could bet on an event an d against the same event. We show that the sum of certainty equivalent s for both bets depends on the judged knowledge of the class of events . We also elicited the decision weights for events and complementary e vents. We found a similar effect of knowledge on the sum of decision w eights.