Many theories have been developed to model decision behavior under ambiguity. In this paper we empirically investigate … theories which are based on non-additive probabilities, i.e. Choquet expected utility (CEU) theories. We first replicated …

null hypothesis of subjective expected utility for a majority of subjects. Most of the remaining subjects exhibit …

We propose a new parametrization of Quantum Decision Theory (QDT), based on Rank Dependent Utility Theory (RDU). Using … experimental data made of choices between pairs of lotteries, we compare QDT with "classical" decision theories, RDU and Cumulative … decision makers as either RDU, RDU-based QDT, CPT or CPT-based QDT. Our major findings are the following: the quantum …