A wide range of social indicators turned sharply negative for Blacks in the late 1980s and began to rebound roughly a decade later. We explore whether the rise and fall of crack cocaine can explain these patterns. Absent a direct measure of crack cocaine%u2019s prevalence, we construct an index...

The twentieth century was a time of rapid globalization for advanced art. Artists from a larger number of countries made important contributions than in earlier periods, and they did so in a larger number of places. Many important innovations also diffused more rapidly, and more widely, than in...

Many have observed that individuals perform worse after having received a promotion. The most famous statement of the idea is the Peter Principle, which states that people are promoted to their level of incompetence. There are a number of possible explanations. Two are explored. The most...

Committees improve decisions by pooling independent information of members, but promote manipulation, obfuscation, and exaggeration of private evidence when members have conflicting preferences. We study how self-interest mediates these conflicting forces. When members' preferences differ, no...

This study examines the various uses of subjective outcomes as a focus of interest for economists. It outlines the possible channels by which economists can usefully add to what are already massive literatures on such outcomes in the other social sciences. Generally we contribute little if we...

This chapter provides a selective review of some contemporary approaches to program evaluation. One motivation for our review is the recent emergence and increasing use of a particular kind of "program" in applied microeconomic research, the so-called Regression Discontinuity (RD) Design of...

Publicly funded exam schools educate many of the world's most talented students. These schools typically contain higher achieving peers, more rigorous instruction, and additional resources compared to regular public schools. This paper uses a sharp discontinuity in the admissions process at...

We document and discuss the implications of a sharp increase in the regional dispersion of skill premia in China in recent years. This has previously been little noted or discussed. We use three urban household surveys for 1995, 2002, and 2007 and estimate skill premia at provincial and city...

I analyze changes in teacher turnover, hiring, effectiveness, and salaries at traditional public schools after the opening of a nearby charter school. While I find small effects on turnover overall, difficult to staff schools (low-income, high-minority share) hired fewer new teachers and...

This paper presents evidence on the speed of evolution (or lack thereof) of a wide range of values and beliefs of different generations of European immigrants to the US. The main result is that persistence differs greatly across cultural attitudes. Some, for instance deep personal religious...