This Paper presents a formal theory of reciprocity. Reciprocity means that people reward kind actions and punish unkind ones. The theory takes into account that people evaluate the kindness of an action not only by its consequences but also by the intention underlying this action. The theory...

In this Paper we show that a simple model of fairness preferences explains major experimental regularities of common pool resource (CPR) experiments. The evidence indicates that in standard CPR games without communication and without sanctioning possibilities inefficient excess appropriation is...

In this Paper we provide a strategic explanation for the spontaneous convergence of legal rules, which nevertheless falls short of harmonization across jurisdictions. We identify a free-riding problem and discuss its implications for legal culture, integration, and harmonization. It is argued...

This paper contributes to the literature on both embodied technical progress and firm dynamics, by formulating an endogenous growth model where selection and imitation play a fundamental role in helping capital good producers to learn about the productivity of technologies embodied in new...

The inheritance of contemporary financial economics invites us to consider financial stability as integral to a liberal market setting. The crisis however demonstrated that financial markets may prove highly dysfunctional in the absence of adequate mechanisms of regulation and governance. This...

This paper examines the business cycle properties of a small set of real US macroeconomic time series using a variety of detrending methods. It is shown: (i) that both quantitatively and qualitatively `stylized facts' of US business cycles vary widely across detrending methods; (ii) that...

This Paper is an exercise in dating the euro area business cycle on a monthly basis. We construct several monthly European real GDP series, and then apply the Bry-Boschan (1971) procedure. Using this method we identify four business cycles. Studying further indicators of business activity, we...

We study the effects of German unification on macroeconomic variables in a model with capital accumulation, skill differences and a welfare state. The integration of two economies differing in capital holdings and skill distribution is similar to a mass migration of low-skilled agents holding no...

We analyze incentives to develop entrepreneurial ideas for venture capitalists (VCs) and incumbent firms. If VCs are sufficiently better at judging an idea's value and if it is sufficiently more costly to patent low than high value ideas, VCs acquire valuable ideas, develop them beyond the level...

Historical records show that the Sicilian mafia initially developed to protect land from predatory attacks, at a time when publicly provided security was scarce and banditry widespread. Using a common-agency model, the Paper shows that: (i) it is optimal for each landowner to voluntarily buy...