Using detailed edit-level data over eight years across a large number of articles on Wikipedia, we find evidence for a positive spillover effect in editing activity. Cumulative past contributions, embodied by the current article length, lead to significantly more editing activity, while...

In this paper, we use 1991-2005 panel data on the unemployed, vacancies, inflow into unemployment, and outflow from unemployment in five former communist economies and in the western part of Germany (a benchmark western economy) to examine the evolution of unemployment together with that of...

This working paper estimated employment and offered wages of young adults with and without disabilities and found new evidence that employment and wage offer gaps between adults with and without disabilities emerge early and are especially large for those with severe or mental limitations. The...

Conducted in 1993, the National Job Corps Study (NJCS) found Job Corps improved education and training outcomes, reduced criminal activity, and improved earnings and employment outcomes. However, impacts on key outcomes were not associated with overall center performance measures. This study...

Uncertainty appears to vary strongly over time, temporarily rising by up to 200% around major shocks like the Cuban Missile crisis, the assassination of JFK and 9/11. This paper offers the first structural framework to analyze uncertainty shocks. I build a model with a time varying second...