The problem addresses in this article is the bias to income and expenditure elasticity estimates caused by inattention to measurement error and unobserved heterogeneity. We gauge these biases by comparing cross-sectional, pseudo-panel and true panel data from Polish and American expenditure surveys.

Qualitative answers given in the INSEE conjuctural surveys (1972-1994) by approximately 2500 households during two consecutive years aloow us to test the rationality of price and unemployment expectations on panel data.

It is well known that all the experimental results concerning the Ultimatum game are at variance with its single subgame perfect equilibrium prediction. We use here Rabin's concepts of equity and fairness equilibrium to investigate these results and analyse the coordination problem of that game.

Supposer que la diversite des choix correspond a des erreurs par rapport a un modele entraine des termes d'erreurs econometriques trop importants. Nous supposons au contraire que les individus ont des fonction encodees par des parametres individuels. A l'issue d'une simulation stochastique, les...

We examine here the quasi-transitivity axiom which is considered to be a minimal criterion which a rational preference should respect. We check for the consistency of this axiom with the well-known theory if choice function.