IFS Working Paper (W13/05)

Ambiguity revealed

Date: 28 March 2013
Publisher: Institute for Fiscal Studies
JEL classification: D1, D8
DOI: 10.1920/wp.ifs.2013.1305
We derive necessary and sufficient conditions for data sets composed of state-contingent prices and consumption to be consistent with two prominent models of decision making under uncertainty: variational preferences and smooth ambiguity. The revealed preference conditions for subjective expected utility, maxmin expected utility, and multiplier preferences are characterised as special cases. We implement our tests on data from a portfolio choice experiment.