We measure friction as the number of unnecessary student applications and school admissions that have to be undertaken per actual matriculation. Friction increases with student and school attractiveness with a decrease at the top.

Tournaments are designed to enhance participants' effort and productivity. However, ranking near the top may increase psychological pressure and reduce performance. We empirically study the impact of interim rank on performance using data from international diving tournaments. We find that...

A monopolist charges the same price for differentiated products when high quality products are likely to be assigned to low valuation consumers. The argument explains the use of 'unpriced quality' for concert tickets, movie theaters, and elsewhere.