Two theorems are presented that show the following: Assume that preferences are influenced by past consumption. If and only if preferences are adaptive, it is the case that all improvement sequences are acyclic and thus can be a basis for doing welfare economics. It is further argued that...

"Men more easily renounce their interests than their tastes." (Rochefoucauld) Consistency and constancy are hallmarks of Odysseus' behavior with respect to the Sirens. The usual reading is that he is a general model of the way all self-control situations should be handled. The alternative...

The doctrine of efficient breach is based on the belief that the risk of postcontractual bargaining failure under property rules is greater than the risk of the courts' miscalculation of damages under liability rules. The article presents the findings of two experiments that challenge this...

This paper analyzes a general-equilibrium model in which each person can choose to be either a producer or a predator. This model shows how predation breaks the link between the interpersonal distribution of productive resources and the inter-personal distribution of consumption. Specifically,...

The measurement of preferences is an ongoing challenge for economists. New insights can be won by relying on reported subjective well-being in addition to observed behaviour. Empirical estimates of well-being functions, based on a sample of 5500 Swiss residents, find that unemployed persons are...

We investigate the incentives of environmental liability law to improve pollution control technology. It is shown that equilibrium choice of abatement technology and of the level of pollution reduction is socially optimal under very restrictive conditions. However, technological spillovers...

People not only care about outcomes; they also value the procedures that lead to the outcomes. Procedural utility is an important source of human well-being. This paper aims at introducing the concept of procedural utility into economics, and argues that it should be incorporated more widely...

The aim of this paper is to explain gift giving as due to a demand for social approval and status. In a simple framework we are able to account for a number of stylized facts. These are that gift giving is often reciprocal, that gifts tend to be inadequate, and that gift giving is sometimes...

Based on a Hotelling-type model, this paper analyzes a differential game where two firms engage in quality-enhancing research and development (R&D). The analysis is formulated in terms of open-loop and feedback solutions. We find that the open-loop stationary levels of R&D and quality are...

This paper studies welfare consequences of consumer-side market transparency with endogenous entry of firms. Different from most studies, we consider the unique symmetric entry equilibrium, which is in mixed strategies. We identify two effects of market transparency on welfare: a competition...