We examine the vertical transmission of overweight drawing upon a sample of English children, both adopted and non-adopted, and their families. Our results suggest strong evidence of an intergenerational association of overweight among adoptees, indicating transmission through cultural factors....

Since the 1940s Gallup has, every December, asked Americans about the living man and woman they most admire. This paper documents the way in which the types of people who are admired has changed and argues that the responses to this question tells us something about the way in which society has...

We study the repeal of a regulation that imposed maximum wholesale and retail markups for all but five fresh fruits and vegetables. We compare the prices of products affected by regulation before and after the policy change and use the unregulated products as a control group. We find that...

This paper contains an empirical analysis demand for "work-group" (or low-end) servers. Servers are at thecentre of many US and EU anti-trust debates, including the Hewlett-Packard/Compaq merger and investigationsinto the activities of Microsoft. One question in these policy decisions is whether...

Case study evidence suggests that exporting firms learn from their clients. But econometric evidence, mostly using exporting and TFP growth, is mixed. We use a UK panel data set with firm-level information on exporting and productivity. Our innovation is that we also have direct data on the...

A fundamental question in monopolistic competition theory is whether the market allocates resources efficiently. This paper generalizes the Spence-Dixit-Stiglitz framework to heterogeneous firms, addressing when the market provides optimal quantities, variety and productivity. Under constant...

We study the market for applications on Facebook, the dominant platform for social networking and make use of a rule change by Facebook by which high-quality applications were rewarded with further opportunities to engage users. We find that the change led to quality being a more important...

This paper embeds a principal-agent firm in an otherwise standard trade model a la Melitz (2003) to investigate the impact of globalization on the provision of managerial incentives and on the distribution of managerial compensation. Facing contractual frictions due to limited liability, firms...

This paper develops a simple theory of pay structures and pay levels across heterogeneous agents by bringing together optimal contracts inside the firm and competitive resource allocation in the market. The central idea is that more talented people tend to create greater value but face larger...

This paper uses a difference-in-difference style estimation strategy to test separately the impact of competition from public sector and private sector hospitals on the efficiency of public hospitals. Our identification strategy takes advantage of the phased introduction of a recent set of...