Due to the high concentration of economic activity along the low-lying coastal zone of the Nile delta and its dependence on Nile river streamflow, Egypt's economy is highly exposed to adverse climate change. Adaptation planning requires a forward-looking assessment of climate change impacts on...

Procrastination is the notorious tendency to postpone work for tomorrow. This paper presents a formal model of procrastination based on expectations and prospect theory, which differs signficantly from the prevalent model of O’Donoghue and Rabin. Subject is assumed to work on a task for...

The class of defensive online portfolio selection algorithms,designed for fi nite investment horizon, is introduced. The Game Constantly Rebalanced Portfolio and the Worst Case Game Constantly Rebalanced Portfolio, are presented and theoretically analyzed. The analysis exploits the rich set of...

The paper critically discusses the issue of rationality and choices in economics in both the behavioural and evolutionary approaches. Our study aims, on the one hand, to highlight the scientific contributions of psychology in economics, since psychology, and with it the theoretical approach of...

This paper argues critically the issue of choices and rationality in economic models through a multidisciplinary analysis. First, the analysis aims at highlight the scientific contributions of psychology in economics, since psychology and the related approach of cognitive economics has made more...

This paper presents the functional relationship between two areas of interest in contemporary behavioral economics: one concerning choices under conditions of risk, the other concerning choices in time. The paper first presents the general formula of the relationship between decision utility,...

Let X be a set of states, and let I be an infinite indexing set. Our first main result states that any separable, permutation-invariant preference order () on X^I admits an additive representation. That is: there exists a linearly ordered abelian group A and a `utility function' u:X--A such...

Numerous experiments have demonstrated the possibility of attitude polarization. For instance, Lord, Ross & Lepper (1979) partitioned subjects into two groups, according to whether or not they believed the death penalty had a deterrent effect, and presented them with a set of studies on the...

We study a two-stage choice problem, where alternatives are allocations between the decision maker (DM) and a passive recipient. The recipient observes choice behavior in stage two, while stage one choice is unobserved. Choosing selfishly in stage two, in the face of a fairer available...

This paper compares the social norms of distributive transfers within village communities in the north and south of Vietnam by analyzing household survey and experimental data. The results of household data analysis show private transfers flow from high-income households to low-income households...