Experimental research in psychology has found a strong negative association between traffic congestion and stress levels of commuters. Here, we investigate the consequences of morning traffic congestion on stock returns. Using traffic data and stock market returns from New York City and London,...

The prevalent affirmative action policy in school choice limits the number of admitted majority students to give minority students higher chances to attend their desired schools. There have been numerous efforts to reconcile affirmative action policies with celebrated matching mechanisms such as...

Controlled choice over public schools attempts giving parents selection options while maintaining diversity of di fferent student types. In practice, diversity constraints are often enforced by setting hard upper bounds and hard lower bounds for each student type. We demonstrate that, with hard...