Demographic change will be one of the major challenges for economic policy in the developed world in the next decades. In this article, we analyze the relationship between age structure and the number of startups. We argue that an individual's decision to start a business is determined by his or...

Demographic change will be one of the major challenges for economic policy in the developed world in the next decades. In this article, we analyze the relationship between age structure and the number of startups. We argue that an individual's decision to start a business is determined by his or...

The launch of Viagra in April 1998 led to a historically unprecedented high usage of erectile dysfunction (ED) drugs. We test whether Viagra's introduction significantly influenced outcomes for its target population such as STD rates of older men, as well as its non-target populations, such as...

Training (for workers) and innovation (for workplaces) are not free lunches. Both activities are also highly risky. If training is costly, possibly not all workers will received it. If training expenses are substantial, employers may attempt to recoup part of the training costs per employee by...

The first-half of the 20th century is characterized by mass migration from Europe to the US and rapid technological progress. Exploiting national immigration policy changes together with historical settlement patterns of immigrants' across US counties, I estimate the effect of skilled...

The launch of Viagra in April 1998 led to a historically unprecedented high usage of erectile dysfunction (ED) drugs. We test whether Viagra's introduction significantly influenced outcomes for its target population such as STD rates of older men, as well as its non-target populations, such as...

Small world networks have attracted much theoretical attention and are widely thought to enhance creativity. Yet empirical studies of their evolution and evidence of their benefits remain scarce. Using patent co-authorship data, we explore regional small-world structures and investigate the...