There exists no satisfactory theory of risk in current normative decision theories. Notions based on utility curvature, loss aversion and probability weighting are derivative, cannot be applied to non-numerical consequences, and are not psychologically intuitive. I develop a Pure Risk theory...

The risk premium is affected by loss aversion and probability distortions as well as utility curvature. We introduce two variants - the total risk premium relative to objective expected value, and the subjective risk premium relative to perceived expected value. Approximate solutions for each...

Brazil, as the rest of Latin America, has experienced three cycles of capital inflows since the collapse of the Bretton Woods system. The first two ended in financial crises, and at the time of writing the third one is still unfolding, although already showing considerable signs of distress. The...

In a jury decision-making, individuals must compromise in order to reach a group consensus. If individuals compromise for non-rational reasons, such as a preference for conformity or due to erroneous information, then the final decision of the group may be biased. This paper presents original...

The first aim of this paper is to revisit the puzzle of cooperation in large-scale societies.It proposes a game theoretic model showing how endogenous emotion-based punishment can sustain ull cooperation when interactions are not repeated, provided that players' endogenous trust is high enough....

This paper uses data from the popular television game-show, "Deal or No Deal?", to analyse the way individuals make choices under risk. In a unique approach to the problem, I present a formal game-theoretical model of the show in which both the contestant and the banker are modelled as strategic...

Capacity expansion models in the power sector were among the first applications of operations research to the industry. We introduce stochastic equilibrium versions of these models that we believe provide a relevant context for looking at the current very risky market where the power industry...

We study the representative consumer's risk attitude and efficient risk-sharing rules in a single-period, single-good economy in which consumers have homogeneous probabilistic beliefs but heterogeneous risk attitudes. We prove that if all consumers have convex absolute risk tolerance, so must...

New entrants in liberalised electricity markets which are not vertically integrated and do not operate a large and diversified portfolio of generation technologies are likely to favour technologies which offer the best prospects to manage fuel and electricity price risks through contractual...

Conventional one-period utility functions in economics assume that initial wealth only enters preferences through the definition of final wealth. As a consequence, those utility functions most utilised (i.e. exponential and quadratic) have implausible risk characteristics. The authors...