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Instruction Time, Information, and Student Achievement: Evidence from a Field Experiment


  • Andersen, Simon Calmar

    (Aarhus University)

  • Guul, Thorbjørn Sejr

    (Aarhus University)

  • Humlum, Maria Knoth

    (Aarhus University)


Prior research has shown that time spent in school does not close the achievement gap between students with low and high socioeconomic status (SES). We examine the effect of combining increased instruction time with information to teachers about their students' reading achievements by using a randomized controlled trial. We find that the teachers' baseline beliefs are more important for low-SES students' academic performance, that the intervention makes the teachers update these beliefs, and—not least—that the intervention improves the reading skills of low-SES students and thereby reduces the achievement gap between high- and low-SES students. The results are consistent with a model in which the teachers' beliefs about the students' reading skills are more important to low- than high-SES students, while at the same time, the teachers' beliefs are subject to information friction and Bayesian learning.

Suggested Citation

  • Andersen, Simon Calmar & Guul, Thorbjørn Sejr & Humlum, Maria Knoth, 2019. "Instruction Time, Information, and Student Achievement: Evidence from a Field Experiment," IZA Discussion Papers 12543, Institute of Labor Economics (IZA).
  • Handle: RePEc:iza:izadps:dp12543

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    References listed on IDEAS

    1. Abhijit V. Banerjee & Shawn Cole & Esther Duflo & Leigh Linden, 2007. "Remedying Education: Evidence from Two Randomized Experiments in India," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 122(3), pages 1235-1264.
    2. Abhijit Banerjee & Rukmini Banerji & James Berry & Esther Duflo & Harini Kannan & Shobhini Mukerji & Marc Shotland & Michael Walton, 2017. "From Proof of Concept to Scalable Policies: Challenges and Solutions, with an Application," Journal of Economic Perspectives, American Economic Association, vol. 31(4), pages 73-102, Fall.
    3. Damgaard, Mette Trier & Nielsen, Helena Skyt, 2018. "Nudging in education," Economics of Education Review, Elsevier, vol. 64(C), pages 313-342.
    4. Esther Duflo & Pascaline Dupas & Michael Kremer, 2011. "Peer Effects, Teacher Incentives, and the Impact of Tracking: Evidence from a Randomized Evaluation in Kenya," American Economic Review, American Economic Association, vol. 101(5), pages 1739-1774, August.
    5. Carneiro, Pedro & Heckman, James J., 2003. "Human Capital Policy," IZA Discussion Papers 821, Institute of Labor Economics (IZA).
    6. Peter Bergman, 2021. "Parent-Child Information Frictions and Human Capital Investment: Evidence from a Field Experiment," Journal of Political Economy, University of Chicago Press, vol. 129(1), pages 286-322.
    7. Montgomery, Christopher Jamil de & Sievertsen, Hans Henrik, 2019. "The Socio-Economic Gradient in Children’s Test-Scores – A Comparison Between the U.S. and Denmark," Nationaløkonomisk tidsskrift, Nationaløkonomisk Forening, vol. 2019(1), pages 1-25.
    8. Peter Leopold S. Bergman & Todd Rogers, 2017. "The Impact of Defaults on Technology Adoption, and its Underappreciation by Policymakers," CESifo Working Paper Series 6721, CESifo.
    9. Flávio Cunha & Irma Elo & Jennifer Culhane, 2013. "Eliciting Maternal Expectations about the Technology of Cognitive Skill Formation," NBER Working Papers 19144, National Bureau of Economic Research, Inc.
    10. Rebecca Dizon-Ross, 2019. "Parents' Beliefs about Their Children's Academic Ability: Implications for Educational Investments," American Economic Review, American Economic Association, vol. 109(8), pages 2728-2765, August.
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    More about this item


    information; learning; field experiment;
    All these keywords.

    JEL classification:

    • I24 - Health, Education, and Welfare - - Education - - - Education and Inequality
    • I28 - Health, Education, and Welfare - - Education - - - Government Policy
    • D83 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Search; Learning; Information and Knowledge; Communication; Belief; Unawareness

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