Precautionary saving typically refers to the additional investment in a risk free asset when exogenous labor income is risky versus certain. When risky income results endogenously from the investment in a risky asset, the meaning and characterization of precautionary saving change and far less...

Asset demand tests for Expected Utility have almost universally been implemented in contingent claim settings where markets are complete. However when markets are incomplete, these tests cannot be applied since contingent claim prices cannot be uniquely recovered from given asset prices and the...

Diversification is a fundamental concept in economics, decision theory, and finance, but the way in which it is implemented in the real world varies greatly. This paper asks how elementary the notion of diversification is by studying whether children apply it as a choice heuristic. We report on...

Experiments on revealed preference often use budget sets that are randomly and independently drawn according to some criteria for each participant. However, this means that the budget sets faced by different individuals are not the same. This paper proposes a method to control for these...

Since Paul Samuelson introduced the theory of revealed preference, it has become one of the most important concepts in economics. This chapter surveys some recent contributions in the revealed preference literature. We depart from Afriat's theorem, which provides the conditions for a data set to...

This paper is concerned with the axiomatic foundation of the revealed preference theory. Many well-known results in the literature rest upon the ability to choose over budget sets that contain only 2 or 3 elements. This paper shows that for any given choice function, many of the famous...

This paper is concerned with the axiomatic foundation of the revealed preference theory. Many well-known results in literature rest upon the ability to choose over budget sets that contains only 2 or 3 elements, the situations which are not observable in real life. In order to give a more...

In a simple single commodity certainty setting with changing tastes, a consumer's consumption plan can be obtained using naive or sophisticated choice. Although in general these solutions diverge, they agree in the special case where the changing tastes are represented by discounted logarithmic...

Experiments on revealed preference often use budget sets for participants that are randomly and independently drawn according to some criteria. However, this means that the budgets and choices of different individuals are not immediately comparable. This paper proposes a method to control for...

Since Paul Samuelson introduced the theory of revealed preference, it has become one of the most important concepts in economics. This chapter surveys some recent contributions in the revealed preference literature. We depart from Afriat's theorem, which provides the conditions for a data set to...