We test implications of economic geography models for location, size and growth of cities with US Census data for 1900 û 1990. Our tests involve non-parametric estimations of stochastic kernels for the distributions of city sizes and growth rates, conditional on various measures of market...

This paper presents new empirical evidence on the cyclical behavior of US unemployment that poses a challenge to standard search and matching models. The correlation between cyclical unemployment and the cyclical component of labor productivity switched sign at the beginning of the Great...

We investigate how liability rules and property rules affect the incentives to invest in research tools. We argue that it is hard to deter infringement under any of the enforcement regimes available. However, counterintuitively, a credible threat of infringement can actually be beneficial to the...

This paper examines the effects of recent welfare reforms in the US and UK on the well-being of children in low-income families, looking specifically at the effects on poverty, family expenditures, and child health and development. The paper finds some commonalities but also some notable...

There is a consensus among European trade unions that economic integration should be complemented by a strong ‘social dimension’. What is far less clearly agreed is what ‘Social Europe’ means, and how it should be defended against the challenges inherent in a neoliberal approach to...

The Stern Review on The Economics of Climate Change is one of the few cost-benefit analyses of climate change to come out in favour of immediate and decisive action to reduce greenhouse gas emissions. The choice of a low discount rate is the main reason for the Review’s divergence in...

This paper develops a model of endogenous product selection by firms. The theory is motivated by new evidence we present on the importance of product switching by U.S. manufacturers. Two-thirds of continuing firms change their product mix every five years, and product switches involve more than...

Fueled by the Arab spring, the question of how the rise of internet-mediated communication affects authoritarian regimes has received unprecedented attention within the discipline of communications. However, in this debate, scholars have not yet turned to the concept of literacy and addressed...

There have been many tests of the descriptive validity of the axioms of expected utility theory (EU) using money outcomes. Such tests are relatively uncommon with respect to health outcomes. This is unfortunate, because the standard gamble - considered by many health economists to be the gold...