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What Can Ex-Participants Reveal about a Program’s Impact?

  • Martin Ravallion
  • Emanuela Galasso
  • Teodoro Lazo
  • Ernesto Philipp

We propose a method for estimating the mean impact of an assigned social program when it is not feasible to do a pre-intervention baseline survey but it is feasible to track ex-participants. In our triple-difference estimator, measured outcome changes are compared between continuing participants and matched ex-participants, after netting out the outcome changes for a matched comparison group who never participated. With sufficient followup observations one can test the joint conditions required for correctly identifying the gains to current participants. We apply the method to a workfare program in Argentina. Significant impacts on participants’ current incomes are revealed.

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File URL: http://jhr.uwpress.org/cgi/reprint/XL/1/208
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Article provided by University of Wisconsin Press in its journal Journal of Human Resources.

Volume (Year): 40 (2005)
Issue (Month): 1 ()
Pages:

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Handle: RePEc:uwp:jhriss:v:40:y:2005:i:1:p208-230
Contact details of provider: Web page: http://jhr.uwpress.org/

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  1. Jalan, Jyotsna & Ravallion, Martin, 1996. "Are there dynamic gains from a poor-area development program?," Policy Research Working Paper Series 1695, The World Bank.
  2. Heckman, James J & Ichimura, Hidehiko & Todd, Petra E, 1997. "Matching as an Econometric Evaluation Estimator: Evidence from Evaluating a Job Training Programme," Review of Economic Studies, Wiley Blackwell, vol. 64(4), pages 605-54, October.
  3. Heckman, James J & Smith, Jeffrey A, 1999. "The Pre-programme Earnings Dip and the Determinants of Participation in a Social Programme. Implications for Simple Programme Evaluation Strategies," Economic Journal, Royal Economic Society, vol. 109(457), pages 313-48, July.
  4. Ashenfelter, Orley C, 1978. "Estimating the Effect of Training Programs on Earnings," The Review of Economics and Statistics, MIT Press, vol. 60(1), pages 47-57, February.
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