Lancasterian models of product differentiation typically assume a one-dimensional characteristics space. We show that standard results on prices and locations no longer hold when firms compete in a multi-characteristics space. In the location game with n characteristics, firms choose to maximize...

We document the presence of multiple and varied constraints to small and medium firm growth. This presents both a practical problem for business training programs and a challenge to academic economists trying to identify mechanisms though which these programs may affect outcomes. External...

As communication costs fall, foreign embassies and consulates have lost much of their role in decision-making and information-gathering. Accordingly, foreign services are increasingly marketing themselves as agents of export promotion. I investigate whether exports are in fact systematically...

This Paper studies the internal commitment mechanisms or ‘personal rules’ (diets, exercise regimens, resolutions, moral or religious precepts, etc.) through which people seek to achieve self-control. Our theory is based on the idea of self-reputation over one’s willpower, which potentially...

We build a theory of prosocial behaviour that combines heterogeneity in individual altruism and greed with concerns for social reputation or self-respect. The presence of rewards or punishments creates doubt as to the true motive for which good deeds are performed, and this ‘overjustification...

This paper analyzes how private decisions and public policies are shaped by personal and societal preferences (values), material or other explicit incentives (laws) and social sanctions or rewards (norms). It first examines how honor, stigma and social norms arise from individuals’ behaviors...