This paper proposes a theory of the relationship between prohibitions and temptation. In presence of self-control problems, moral values may increase individual material welfare (and utility) by serving as a self-commitment device. The model investigates the relationship between morality and...

Auditing institutions, such as the German Federal Court of Audit (BRH), provide information on public revenue and public spending. The question of how to increase tax compliance has been of frequent interest. Unfortunately, information from German taxpayers? declaration behaviour (beyond the...

We present new evidence on how generalized trust is formed. Unlike previous studies, we look at the explanatory power of economic institutions, we use newer data, we incorporate more countries, and we use instrumental variables to handle the causality problem. A central result is that legal...

Specialization and trade rest on institutions that protect property rights and enforce agreements. Frequently, in economic analysis institutions are just assumed to exist, or it is implicitly supposed that the political game can establish them. Once this assumption is done, the invisible hand...

Offenders are more likely than non-offenders to be victims, and victims are more likely than non-victims to be offenders. The overlap between offenders and victims is not well understood in criminology, and in the economics of crime the stylized empirical fact is even widely ignored. The paper...

From 1997 to 2005, an astonishing 5,200 million USD was invested to reduce cocaine production in Colombia, the world's main cocaine producer. However, little is known about the effectiveness of policies targeting coca cultivation. This paper uses a surveybased experiment to evaluate the effects...

Approximately 1.2% of Colombia's GNP is spent every year on the war on drugs, but very little is known about coca farming decisions at the household level. In order to understand the decision to cultivate coca as well as that of the amount of land to use for its cultivation, we develop an...

The intense debate on the effectiveness of the war on drugs contrasts with the lack of empirical evidence on its impacts. To evaluate the effectiveness of control-supply policies, we use micro data from an original survey with farmers living in a coca growing area in Colombia. We find that while...

Using declassified Federal Bureau of Narcotics records on 800 US Mafia members active in the 1950s and 1960s, and on their connections within the organized crime network, I estimate network effects on gangsters' economic status. Lacking information on criminal proceeds, I measure economic status...

We study peer effects in crime by analyzing co-offending networks. We first provide a credible estimate of peer effects in these networks equal to 0.17. This estimate implies a social multiplier of 1.2 for those individuals linked to only one co-offender and a social multiplier of 2 for those...