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Partisan Grading

By Talia Bar and Asaf Zussman

American Economic Journal: Applied Economics, January 2012

We study grading outcomes associated with professors in an elite university in the United States who were identified—using voter registration records from the county where the university is located—as either Republicans or Democrats. The evide...

Contagious Adverse Selection

By Stephen Morris and Hyun Song Shin

American Economic Journal: Macroeconomics, January 2012

We illustrate the corrosive effect of even small amounts of adverse selection in an asset market and show how it can lead to the total breakdown of trade. The problem is the failure of "market confidence," defined as approximate common knowledge of an upp...