Most frequently used class of utility functions for modelling the investment policy of individual agents by the constant relative risk aversion (CRRA) utility functions. The objective of this paper is to try to provide the plausible risk aversion parameter of individual households under this assumption. I argue that the risk aversion of an individual investor may be significantly larger than is...

In this article we study the effect of uncertainty on an entrepreneur who must choose the capacity of his business before knowing the demand for his product. The unit profit of operation is known with certainty, but there is no flexibility in our one-period framework. We show how the introduction of global uncertainty reduces the investment of the risk-neutral entrepreneur and, even more, that ...

We consider an investor who faces parameter uncertainty in a continuous-time financial market. We model the investor’s preference by a power utility function leading to constant relative risk aversion. We show that the loss in expected utility is large when using a simple plug-in strategy for unknown parameters. We also provide theoretical results that show the trade-off between holding a well-...

This paper presents an axiomatic characterization of preferences which allow ambiguity aversion. It is assumed that decision makers treat risky lotteries and ambiguous lotteries separately, with preferences governed by the von Neumann-Morgenstern axioms for risk and a variant of the Savage axioms for ambiguity. These axioms imply that the decision maker chooses among risks according to expected...

This paper studies comparative risk aversion between risk averse agents in the presence of a background risk. Although the literature covers this question extensively, our contribution differs from most of the literature in two respects. First, background risk does not need to be additive or multiplicative. Second, the two risks are not necessary mean independent, and may be conditional expecta...

We consider a formal approach to comparative risk aversion and applies it to intertemporal choice models. This allows us to ask whether standard classes of utility functions, such as those inspired by Kihlstrom and Mirman (1974), Selden (1978), Epstein and Zin (1989) and Quiggin (1982) are well-ordered in terms of risk aversion. Moreover, opting for this model-free approach allows us to establi...

We consider a formal approach to comparative risk aversion and applies it to intertemporal choice models. This allows us to ask whether standard classes of utility functions, such as those inspired by Kihlstrom and Mirman (1974), Selden (1978), Epstein and Zin (1989) and Quiggin (1982) are well-ordered in terms of risk aversion. Moreover, opting for this model-free approach allows us to establi...

Under the S-shaped utility of loss aversion, this paper considers bequest motivation pension plan participants, random salary income before retirement and substitution rate between receiving benefits after wages retirement, studies optimal investment strategy defined contribution (DC) pension. Assuming that funds can invest in a financial market consisting three assets (risk-free asset cash, ro...

In this paper, we extend previous reference-dependence newsvendor research by incorporating both consumer trade-offs and government subsidies to evaluate the relevant influences on the optimal electric vehicle (EV) production decisions. We present the properties of the model, derive the closed-form solutions for the model given the relevant constraints, and use numerical experiments to illustra...