Different from previous studies that use a best estimate, interval, or sets of probabilities, we represent the degree of ambiguity through levels of information provided to subjects. The willingness to pay is higher when more amount of information is provided.

In the 40's and early 50' two decision theories were proposed and have since dominated the scene of the fascinating field of decision-making. In 1944 - when von Neumann and Morgenstern showed that if preferences are consistent with a set of axioms then it is possible to represent these...

Experimental research on decision making under risk has until now always employed choice data in order to evaluate the empirical performance of expected utility and the alternative non-expected utility theories. The present paper performs a similar analysis which relies on pricing data instead...