This paper analyzes peer effects among university scientists. Specifically, it investigates whether the number of peers and their average quality affects the productivity of researchers in physics, chemistry, and mathematics. The usual endogeneity problems related to estimating peer effects are...

We investigate the rapid influx of overseas students into UK higher education and the impact on the number of domestic students. Using administrative data since 1994/5, we find no evidence of crowd out of domestic undergraduate students and indications of increases in the domestic numbers of...

This paper examines sorting into interracial friendships at selective universities. We show significant friendship segregation, particularly for blacks. Indeed, black friendships are no more diverse in college than in high school despite the colleges blacks attend having substantially smaller...

We exploit a universe dataset of state school students in England with linked test score records to document the evolution of attainment through school for different ethnic groups. The analysis yields a number of striking findings. First, we show that, controlling for personal characteristics,...

A rise in population caused by increased immigration, is sometimes accompanied by concerns that the increase in population puts additional or differential pressure on welfare services which might affect the net fiscal contribution of immigrants. The UK and Germany have experienced significant...

We investigate whether a rare event (like the default of the annuity provider) can explain the annuity market participation puzzle. High risk aversion is needed to change behavior in the presence of such a disastrous shock but higher risk aversion also makes annuities more valuable. Therefore,...

In this paper we look at links between police resources and crime in a different way to the existing economics of crime work. To do so we focus on a policy intervention - the Street Crime Initiative - that was introduced in England and Wales in 2002. This allocated additional resources to some...

In this paper we study the causal impact of police on crime by looking at what happened to crime before and after the terror attacks that hit central London in July 2005. The attacks resulted in a large redeployment of police officers to central London boroughs as compared to outer London - in...

In this paper we look at the relationship between crime and economic incentives in a different way to other work in this area. We look at changes in unemployment benefits and the imposition of benefit sanctions as a means of studying the way that people on the margins of crime may react to...

Especially in developing countries credit constraints are often perceived as one of the most important market frictions constraining firm innovation and growth. Huge amounts of public money are being devoted to the removal of such constraints but their effectiveness is still subject to an...