This paper shows how revealed preference relations, observed under general budget sets, can be extended using closure operators which impose certain assumptions on preferences. Common extensions are based on the assumption that preferences are convex and/or monotonic, but we also consider...

This paper investigates the existence of non-linear dependence in Portuguese financial time series namely stock exchange indexes returns. Non-linear dependence may exist in a series even if we have already concluded for the lack of linear dependence. If present, non-linear dependence would...

This paper investigates the existence of non-linear dependence in 10-years government bonds price quotes for the period 1995:08-1998:10, for 12 countries. If present, non-linear dependence would contradict the random walk model and the financial markets weak form efficiency hypothesis. Using...

This paper investigates the existence of non-linear dependence in Portuguese financial time series namely stock exchange indexes returns. Non-linear dependence may exist in a series even if we have already concluded for the lack of linear dependence. If present, non-linear dependence would...

We provide a framework to decompose preferences into a notion of distributive justice and a selfishness part and to recover individual notions of distributive justice from data collected in appropriately designed experiments. "Dictator games" with varying transfer rates used in Andreoni and...

It is shown how to test revealed preference data on choices under uncertainty for consistency with first and second order stochastic dominance (FSD or SSD). The axiom derived for SSD is a necessary and sufficient condition for risk aversion. If an investor is risk averse, stochastic dominance...

This article provides a robust non-parametric approach to demand analysis based on a concept called homothetic efficiency. Homotheticity is a useful restriction or assumption but data rarely satisfy testable conditions. To overcome this problem, this article provides a way to estimate homothetic...

We employ Data Envelopment Analysis, to estimate efficiency scores for Portuguese public universities. The input measures are constructed from the number of teachers and from universities’ spending while the output measures are based on the undergraduate success rate and on the number of...

We compute Public Sector Performance (PSP) and Public Sector Efficiency (PSE) indicators and Data Envelopment Analysis (DEA) efficiency scores for a sample of twenty-three Latin American and Caribbean Countries (LAC) to measure efficiency of public spending for the period 2001-2010. Our results...

We evaluate the efficiency of basic and secondary education in 24 governorates of Tunisia during the period 1999-2008 using a non-parametric approach, DEA (Data Envelopment Analysis). We use four inputs: number of teacher per 100 students, number of classes per 100 students, number of schools...