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Freedom Fries

By Guy Michaels and Xiaojia Zhi

American Economic Journal: Applied Economics, July 2010

Do firms always choose the cheapest suitable inputs, or can group attitudes affect their choices? To investigate this question, we examine the deterioration of relations between the United States and France from 2002-2003, when France's favorability ratin...

Emerging Market Currency Excess Returns

By Stephen Gilmore and Fumio Hayashi

American Economic Journal: Macroeconomics, October 2011

We consider the excess return from 20 internationally tradable emerging market (EM) currencies against the US dollar. It has two contributions. First, we document stylized facts about EM currencies. EM currencies have provided significant equity-like exce...

On the Demise of the Long Run

By Roy B. Helfgott

Journal of Economic Perspectives, Fall 1989

John Maynard Keynes observed that, "In the long run we are all dead," but in terms of economic analysis, the long run also may be dead. The culprit is new technology that is wiping out many of the distinctions between the long and short run. As pointed ou...

What Can We Learn from Charter School Lotteries?

[Symposium: Schools and Accountability]

By Julia Chabrier, Sarah Cohodes, and Philip Oreopoulos

Journal of Economic Perspectives, Summer 2016

We take a closer look at what can be learned about charter schools by pooling data from lottery-based impact estimates of the effect of charter school attendance at 113 schools. On average, each year enrolled at one of these schools increases math scores ...

Search Advertising

By Alexandre de Cornière

American Economic Journal: Microeconomics, August 2016

Search engines enable advertisers to target consumers based on the query they have entered. In a framework in which consumers search sequentially after having entered a query, I show that such targeting reduces search costs, improves matches and intensifi...