Despite widespread use in online transactions, rating systems only provide summary statistics of buyers' diverse opinions at best. To investigate the consequences of this coarse form of information aggregation, we consider a dynamic lemons market in which buyers share their evaluations...

Despite widespread use in online transactions, rating systems only provide summary statistics of buyers' diverse opinions at best. To investigate the consequences of this coarse form of information aggregation, we consider a dynamic lemons market in which buyers share their evaluations...

In this paper we provide a simple new version of Arrow’s impossibility theorem, in a world with only one preference profile. This theorem relies on a new assumption of preference diversity, and we explore alternative notions of preference diversity at length.

In this paper we provide a simple new version of Arrow’s impossibility theorem, in a world with only one preference profile. This theorem relies on a new assumption of preference diversity, and we explore alternative notions of preference diversity at length.

An important issue in economics is how market structure affects prices. While the standard view is that competition lowers prices, Chen and Riordan (2006) argued that with product differentiation it is not exceptional for prices to be higher under duopoly than monopoly. This paper empirically...

La volonté publique d’avancer vers un développement plus durable est favorable à l’émergence d’initiatives locales porteuses de dynamisme sur le territoire. Certaines de ces actions s’articulent autour de l’utilisation du cheval, mais elles sont encore mal connues, y compris par...

Dans un nombre croissant de régions, des élus, des associations ou de simples passionnés utilisent le cheval pour remplir des missions de service public. Or, ces initiatives locales sont encore très éparses et mal connues. Cette étude, menée en partenariat par l’IFCE et l’INRA, a pour...