The Impact of Eyeglasses on the Academic Performance of Primary School Students: Evidence from a Randomized Trial in Rural China
About 10% of primary school students in developing countries have poor vision, yet in virtually all of these countries very few children wear glasses. There has been almost no research on the impact of poor vision on school performance in developing countries, and simple OLS estimates are likely to be biased because students who study more often are likely to develop poor vision faster. This paper presents results from the first year of a randomized trial in Western China that began in the summer of 2004. The trial involves over 19,000 students in 165 schools in two counties of Gansu province. The schools were randomly divided (at the township level) into 103 schools that received eyeglasses (for students in grades 3-5) and 62 schools that served as controls. The results from the first year indicate that, after one year, provision of eyeglasses increased test scores by 0.15 to 0.30 standard deviations (of the distribution of the test scores).
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- Miriam Bruhn & David McKenzie, 2009.
"In Pursuit of Balance: Randomization in Practice in Development Field Experiments,"
American Economic Journal: Applied Economics,
American Economic Association, vol. 1(4), pages 200-232, October.
- Bruhn, Miriam & McKenzie, David, 2008. "In pursuit of balance : randomization in practice in development field experiments," Policy Research Working Paper Series 4752, The World Bank.
- Doug Miller & A. Colin Cameron & Jonah B. Gelbach, 2006.
"Bootstrap-Based Improvements for Inference with Clustered Errors,"
621, University of California, Davis, Department of Economics.
- A. Colin Cameron & Jonah B. Gelbach & Douglas L. Miller, 2008. "Bootstrap-Based Improvements for Inference with Clustered Errors," The Review of Economics and Statistics, MIT Press, vol. 90(3), pages 414-427, August.
- A. Colin Cameron & Jonah B. Gelbach & Douglas L. Miller, 2007. "Bootstrap-Based Improvements for Inference with Clustered Errors," NBER Technical Working Papers 0344, National Bureau of Economic Research, Inc.
- Gomes-Neto, Joao Batista & Hanushek, Eric A. & Leite, Raimundo Helio & Frota-Bezzera, Roberto Claudio, 1997.
"Health and schooling: Evidence and policy implications for developing countries,"
Economics of Education Review,
Elsevier, vol. 16(3), pages 271-282, June.
- Batista Gomes, J. & Hanushek, E.A. & Helio Leite, R., 1992. "Health and Schooling: Evidence and Policy Implications for Developping Countries," RCER Working Papers 306, University of Rochester - Center for Economic Research (RCER).
- Alan B. Krueger & Mikael Lindahl, 2000.
"Education for Growth: Why and For Whom?,"
NBER Working Papers
7591, National Bureau of Economic Research, Inc.
- Barro, R.J., 1989.
"Economic Growth In A Cross Section Of Countries,"
RCER Working Papers
201, University of Rochester - Center for Economic Research (RCER).
- World Bank, 2001. "China : Overcoming Rural Poverty," World Bank Publications, The World Bank, number 13902, October.
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