The topic of this thesis is decision-making under risk. I focus my analysis on expected utility theory by von Neumann and Morgenstern. I am especially interested in modeling risk attitudes represented by Bernoulli utility functions that belong to the following classes: Constant Absolute Risk...

The purpose of this paper is to demonstrate that Cumulative Prospect Theory is a serious alternative for Expected Utility Theory. It does not contradict Expected Utility, but includes it as a special example. A very useful example, because simple and yet very flexible, Expected Utility proved...

This paper introduces the concept of range-dependent utility. Instead of reference dependence which evaluates outcomes relative to some reference point, we postulate dependence on a given lottery (set of lotteries) outcomes range. In this way the decision maker is a fully rational expected...

This paper introduces the concept of range-dependent utility. Instead of reference dependence which evaluates outcomes relative to some reference point, we postulate dependence on a given lottery (set of lotteries) outcomes range. In this way the decision maker is a fully rational expected...

This paper reevaluates the complementary symmetry hypothesis and the supporting experimental evidence. Originally the hypothesis was stated for binary risky prospects. We generalize the hypothesis to arbitrary state-contingent real-valued acts, thus extending the domain from risk to...

In this paper I show that within expected utility large buying and selling price gap is possible and Rabin (2000) paradox may be resolved if only initial wealth is allowed to be small. It implies giving up the doctrine of consequentialism which may be reduced to requiring initial wealth to be...