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- MARIANNE BERTRAND, ESTHER DUFLO, +11 authors Kevin Murphy
- 2004

Most papers that employ Differences-inDifferences estimation (DD) use many years of data and focus on serially correlated outcomes but ignore that the resulting standard errors are inconsistent. To illustrate the severity of this issue, we randomly generate placebo laws in state-level data on female wages from the Current Population Survey. For each law, we… (More)

- Adriana Kugler, Juan F. Jimeno, +28 authors Rodolfo Debenedetti
- 2003

Los Documentos de Trabajo se distribuyen gratuitamente a las Universidades e Instituciones de Investigación que lo solicitan. No obstante están disponibles en texto completo a través de Internet: These Working Documents are distributed free of charge to University Department and other Research Centres. They are also available through Internet: Abstract… (More)

- Marianne Bertrand, Esther Duflo, +11 authors Douglas Staiger
- 2003

Most papers that employ Differences-inDifferences estimation (DD) use many years of data and focus on serially correlated outcomes but ignore that the resulting standard errors are inconsistent. To illustrate the severity of this issue, we randomly generate placebo laws in state-level data on female wages from the Current Population Survey. For each law, we… (More)

- Rajeev H. Dehejia, Gary Chamberlain, +5 authors Jeffrey Liebman
- 2002

I argue for thinking of program evaluation as a decision problem. There are two steps. First, a counselor determines which program (treatment or control) each individual joins, based for example on maximizing the probability of employment or expected earnings. Second, the policymaker decides whether: to assign all individuals to treatment or to control, or… (More)

- Rabah Amir, Malgorzata Knauff, +5 authors Mark Stegeman
- 2006

—Four rankings of economics departments worldwide in terms of graduate education are constructed. The central methodological idea is that the value of a department is the sum of the values of its PhD graduates, as reflected in the values of their current employing departments. Scores are derived as solutions to linear simultaneous equations in the values.… (More)

This paper shows that moment inequality tests that are asymptotically similar on the boundary of the null hypothesis exist, but have poor power. Hence, existing tests in the literature, which are asymptotically non-similar on the boundary, are not de…cient. The results are obtained by …rst establishing results for the …nite-sample multivariate normal… (More)

- Kosuke Imai, In Song Kim, +8 authors Teppei Yamamoto
- 2012

Linear fixed effects regression models are a primary workhorse for causal inference. And yet, even when the treatment is exogenous within each unit, neither one-way nor two-way fixed effects model can in general consistently estimate the average treatment effect. In this paper, we show that weighted linear fixed effects regression models can overcome this… (More)

- Gautam Gowrisankaran, John Krainer, +7 authors Yuanfang Lin
- 2011

We estimate a structural equilibrium model of the automatic teller machine market (ATM) to evaluate the implications of regulating ATM surcharges. We use data on bank characteristics, potential and actual ATM locations, and consumer locations; identify the model parameters with a regression discontinuity design; and develop methods to estimate the model… (More)

- Guido W. Imbens, Joshua Angrist, +6 authors Geert Ridder
- 2009

Two recent papers, Deaton (2009), and Heckman and Urzua (2009), argue against what they see as an excessive and inappropriate use of experimental and quasi-experimental methods in empirical work in economics in the last decade. They specifically question the increased use of instrumental variables and natural experiments in labor economics, and of… (More)

- Randall A. Lewis, David H. Reiley, +4 authors Garrett Johnson
- 2011

We measure the causal effects of online advertising on sales, using a randomized experiment performed in cooperation between Yahoo! and a major retailer. After identifying over one million customers matched in the databases of the retailer and Yahoo!, we randomly assign them to treatment and control groups. We analyze individual-level data on ad exposure… (More)