Researchers often identify degree effects by including degree attainment (D) and years of schooling (S) in a wage model, yet the source of independent variation in these measures is not well understood. We argue that S is negatively correlated with ability among degree-holders because the most...

We examine the relationship between the employment and compensation of managers and CEOs and the presence of a unionized workforce. We develop a simple efficiency wage model, with a tradeoff between higher wages for workers and more monitoring, which requires more managers. The model also...

Becker?s theory of human capital predicts that minimum wages should reduce training investments for affected workers because they prevent these workers from taking wage cuts necessary to finance training. In contrast, in noncompetitive labor markets, minimum wages tend to increase training of...

This paper analyses the compensatory behavior of smokers. Exploiting data on cotinine concentration a metabolite of nicotine measured in a large population of smokers over time, we show that smokers compensate tax hikes by extracting more nicotine per cigarette. Our study makes two important...

This paper shows that smoking intensity, i.e. the amount of nicotine extracted per cigarette smoked, responds to changes in excise taxes and tobacco prices. We exploit data covering the period 1988 to 2006 across many US states. Moreover, we provide new evidence on the importance of cotinine...

Most of the literature on the evaluation of training programs focuses on the effect of participation on a particular outcome (e.g. earnings). The treatment is generally represented by a binary variable equal to one if participation in the program occurs, and equal to zero if no participation...

We investigate whether a causal interpretation of the robust association between cognitive skills and economic growth is appropriate and whether cross-country evidence supports a case for the economic benefits of effective school policy. We develop a new common metric that allows tracking...