More able individuals may over-investment in education when education signals ability. If education directly increases productivity, increasing education cost for the less able may increase welfare by reducing over-investment by the more able, but will not do so if such cost is already either...

In an influential article, “Unraveling in Matching Markets,” Li and Rosen (1998) note the first seven picks, and 17 among 29 first round selections of the 1997 NBA draft, were not college seniors. In 2004, the first pick in the NBA draft was a high school senior, and 25 of the first 29 picks...

Adam Smith’s proposal for paying professors was intended to induce increased faculty knowledge. If students have imperfect information about what they learn, and universities can only imperfectly measure the input of faculty time in student learning, publications may be used to measure faculty...

Publications signal a professor’s productivity and may lead to raids by other universities. A raided professor learns the value of non-wage benefits at a raiding university, and will quit only if benefits elsewhere are relatively high. The social value of these benefits suggests research may...

Following Rosen [1981], superstar effects (earnings convex in quality and a few firms reaping a large share of market earnings) occur with imperfect substitution between sellers, low (and possibly declining) marginal cost of output, and marginal cost falling as quality increases. However,...