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A Comparison of Two-Stage Least Squares (TSLS) and Ordinary Least Squares (OLS) in Estimating the Structural Relationship between After-School Exercise and Academic Performance

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  • Kyulee Shin

    (Department of Sports Science, Seoul National University of Science & Technology, Seoul 01811, Korea)

  • Sukkyung You

    (College of Education, Hankuk University of Foreign Studies, Seoul 130-791, Korea)

  • Mihye Kim

    (Department of Sports Science, Seoul National University of Science & Technology, Seoul 01811, Korea)

Abstract

The current study examines the structural relationship between the academic performance exam scores of Korean middle school students and their after-school exercise hours. Although prior literature theoretically or experimentally predicts that these variables are positively associated, this association is difficult to empirically verify without controlling for mutual effects with other variables, or unless a full model is estimated by specifying the whole structure of all variables affecting the two variables in question. Unlike previous studies, this study estimates the structural relationship using two-stage least squares method, which does not require experimental observations collected for our particular purpose or estimating the full model. From this estimation, we empirically affirm that there is a positive structural relationship between students’ after-school exercise hours and their academic performance exam scores, whereas the ordinary least squares method consistently estimates a negative relationship.

Suggested Citation

  • Kyulee Shin & Sukkyung You & Mihye Kim, 2021. "A Comparison of Two-Stage Least Squares (TSLS) and Ordinary Least Squares (OLS) in Estimating the Structural Relationship between After-School Exercise and Academic Performance," Mathematics, MDPI, vol. 9(23), pages 1-13, December.
    • Handle: RePEc:gam:jmathe:v:9:y:2021:i:23:p:3105-:d:693231
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    References listed on IDEAS

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    4. Uri Gneezy & Muriel Niederle & Aldo Rustichini, 2003. "Performance in Competitive Environments: Gender Differences," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 118(3), pages 1049-1074.
    5. Cappelen, Alexander W & Charness, Gary & Ekström, Mathias & Gneezy, Uri & Tungodden, Bertil, 2017. "Exercise Improves Academic Performance," Working Paper Series 1180, Research Institute of Industrial Economics.
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