Estimates of the effect of school-imposed penalties for drug use on a student's consumption of marijuana are biased if both are determined by unobservable school or individual attributes. Reverse causality is also a potential challenge to retrieving estimates of the causal relationship, as the...

Parental entrepreneurship is a strong, probably the strongest, determinant of own entrepreneurship. We explore the origins of this intergenerational association in entrepreneurship. In particular, we identify the separate effects of pre- and post-birth factors (nature and nurture), by using a...

This discussion paper resulted in a publication in the <A href="http://press.uchicago.edu/journals/jole/forthcoming.html?journal=jole">'Journal of Labor Economics'</A>, forthcoming.<P> Parental entrepreneurship is a strong, probably the strongest, determinant of own entrepreneurship. We explore the origins of this intergenerational association in entrepreneurship. In particular,...</p></a>

Unemployment insurance systems include monitoring of unemployed workers and punitive sanctions if job search requirements are violated. We analyze the effect of sanctions on the ensuing job quality, notably on wage rates and hours worked, and we examine how often a sanction leads to a lower...

We consider a simple model in which agents are endowed with heterogeneous abilities and differing degrees of honesty. Agents choose either to become criminals or invest in education and become workers instead. The model is closed in that all criminal proceeds are stolen from agents working in...