Grandmont\'s ([14]) notion of behavioral heterogeneity is reformulated in a non parametric set-up such that the space of budget share functions admits a ``uniform\'\' probability distribution. If the population is distributed according to this measure, the aggregate budget share function is...

Grandmont\'s ([14]) notion of behavioral heterogeneity is reformulated in a non parametric set-up such that the space of budget share functions admits a ``uniform\'\' probability distribution. If the population is distributed according to this measure, the aggregate budget share function is...

If one wants to get rid of the paradoxes pointed out by Hildenbrand (1998) and B. de Villemeur (1999), one needs to reformulate Grandmont's (1992) notion of behavioral heterogeneity such as to get exact insensitivity of the aggregate budget share function with respect to changes in prices and...