This note describes and illustrates a new Stata program, gmmcovearn, that estimates the covariance structure of earnings for a variety of models using the GMM estimator. The program estimates models that incorporate time factor loadings and cohort factor loadings on both the transitory and...

This paper examines how trade liberalisation affects innovation, profits and welfare when firms are engaging in strategic R&D investment. We show that there are multiple equilibria including an autarky equilibrium for a range of high but non-prohibitive trade costs. At lower trade costs, only...

In this chapter we present a selective analytic survey of some of the main results of trade under oligopoly. We concentrate on three topics: oligopoly as an independent determinant of trade, as illustrated by the reciprocal-markets model of Brander (1981); oligopoly as an independent rationale...

Hope plays an important role in all individuals’ lives both today and in the future. While hope and hopelessness are important concepts and the subjects of much theorizing in psychology, theology, philosophy, political science, nursing, as well as in literature and the arts, it is absent from...

This paper examines how trade liberalisation affects innovation, profits and welfare in a reciprocal markets model when firms pre-commit to R&D investment. First, we show that, for a range of trade costs, there are multiple equilibria, implying that the path of trade liberalisation is not...

This paper analyses economists’ support for the Fair Minimum Wage Act of 2013, by examining the characteristics of almost 1000 economists who signed open letters either supporting or opposing the Bill prior to a Senate debate on the legislation. In contrast to previous work, which found that...

This paper analyzes a multi-auction setting in which informed strategic agents are endowed with heterogeneous noisy signals about the liquidation value of a risky asset. One result is that when the variance of the noise is small the competition between traders takes the form of a rat race during...

Using data on approximately 1240 games of bowling we examine the statistical properties of 10-pin bowling scores. We find evidence that that the distribution of bowling scores is approximately log-normally distributed with a common variance across players. This allows us to consider the...

This paper examines student incentives when faced with a college admissions policy which pursues student body diversity. The effect of a diversify-conscious admissions policy critically depends on the design of the policy. If the admissions policy fails to incentivize students from a...

The misevaluation of risk in securitized …financial products is central to understand- ing the Financial Crisis of 2007-2008. This paper characterizes the evolution of factors affecting collateralized debt obligations (CDOs) based on subprime mortgages. A key feature of subprime-mortgage backed...