We study international trade of innovative goods subject to scientific uncertainty on consumers' health effects. Trade of these goods is often at the centre of international disputes. We show that a new trade protectionism may arise because of the scientific uncertainty. A free riding effect is...

If the precautionary principle must become the guide of the international community for environmental protection policies, an economic interpretation of the principle is in order. The analysis of case studies and a survey of the recent decision theoretic literature show on the one hand, the...

Two countries set their enforcement non-cooperatively to deter native and foreign individuals from committing crime in their territory. Crime is mobile, ex ante (migration) and ex post (fleeing), and criminals hiding abroad after having com- mitted a crime in a country must be extradited back....

We develop a model in which two countries choose their enforcement levels non-cooperatively, in order to deter native and foreign individuals from committing crime in their territory. We assume that crime is mobile, both ex ante (migration) and ex post (fleeing), and that criminals who hide...

It is often claimed that rewards for whistleblowers lead to fraudulent reports, but for several US programs this was not a major problem. We model the interaction between rewards for whistleblowers, sanctions against fraudulent reporting, judicial errors and standards of proof in the court case...

We study regulation of the auditing profession in a model where audit quality is unobservable and enforcing regulation is costly. The optimal audit standard falls short of the first-best audit quality, and is increasing in the riskiness of firms and in the amount of funding they seek. The model...

We analyze the relationship between legal institutions, innovation and growth. We compare a rigid (law set ex-ante) legal system and a flexible one (law set after observing current technology). The flexible system dominates in terms of welfare, amount of innovation and output growth at...

This paper analyzes the effects of the "Nordic Model" of prostitution legislation adopted in Sweden in 1999, according to which buyers only are prosecuted. We focus on various measures of violence, distinguishing between known and unknown perpetrator, indoor and outdoor crimes, and on health...

When Legislators introduce laws that award amnesties to 'low-rank' criminals co- operating with the justice, top criminals may bribe public officials to subvert the law. Legislators should anticipate this reaction and fight it back by introducing policies that bundle amnesties for low-rank...

We test the rational economic model of marginal deterrence of law enforcement - i.e., the need for graduating the penalty to the severity of the crime. We combine individual-level data on sentence length for a representative sample of US inmates with proxies for maximum punishment and monitoring...