We test the hypothesis that "genuine" or "convincing" smiling is a costly signal that has evolved to induce cooperation in situations requiring mutual trust. Potential trustees in a trust game made video clips for viewing by potential trusters before the latter decided whether to send them...

In this paper, we show that behavioral features can be obtained at a group level when the individuals of the group are heterogeneous enough. More precisely, starting from a standard model of Pareto optimal allocations, with expected utility maximizers and exponential dis- counting, but allowing...

What is the impact of corporate environmental disclosure on the cost of capital? In this research, we try to answer this question. The empirical research is based on companies listed at the SBF 120. In 2006, most of these companies dedicated a part of their annual report to sustainable...

Firms such as Ikea, First Direct, Apple or Royal Canin think and act in an unconventional way. They build up new societal and economic territories around emerging cultural and social wants and trends. They use a proactive marking approach. They coopt outside stake holders and put the emphasis...