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Handedness, Health and Cognitive Development: Evidence from Children in the NLSY

Author

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  • Johnston, David W.

    (Monash University)

  • Nicholls, Michael E. R.

    (Melbourne Institute of Applied Economic and Social Research)

  • Shah, Manisha

    (University of California, Los Angeles)

  • Shields, Michael A.

    (Monash University)

Abstract

Using data from the US National Longitudinal Survey of Youth, and fitting family fixed-effects models of child health and cognitive development, we test if left-handed children do significantly worse than their right-handed counterparts. The health measures cover both physical and mental health, and the cognitive development test scores span (1) Memory, (2) Vocabulary, (3) Mathematics, (4) Reading and (5) Comprehension. We find that while left-handed children have a significantly higher probability of suffering an injury needing medical attention, there is no difference in their experience of illness or poor mental health. We also find that left-handed children have significantly lower cognitive development test scores than right-handed children for all areas of development with the exception of reading. Moreover, the left-handedness disadvantage is larger for boys than girls, and remains roughly constant as children grow older for most outcomes. We also find that the probability of a child being left-handed is not related to the socioeconomic characteristics of the family, such as income or maternal education. All these results tend to support a difference in brain functioning or neurological explanation for handedness differentials rather than one based on left-handed children living in a right-handed world.

Suggested Citation

  • Johnston, David W. & Nicholls, Michael E. R. & Shah, Manisha & Shields, Michael A., 2010. "Handedness, Health and Cognitive Development: Evidence from Children in the NLSY," IZA Discussion Papers 4774, Institute of Labor Economics (IZA).
  • Handle: RePEc:iza:izadps:dp4774
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    References listed on IDEAS

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    Cited by:

    1. Paul Frijters & David Johnston & Manisha Shah & Michael Shields, 2013. "Intrahousehold Resource Allocation: Do Parents Reduce or Reinforce Child Ability Gaps?," Demography, Springer;Population Association of America (PAA), vol. 50(6), pages 2187-2208, December.
    2. Fabio Mariani & Marion Mercier & Luca Pensieroso, 2023. "Left-handedness and economic development," Journal of Economic Growth, Springer, vol. 28(1), pages 79-123, March.
    3. Marcello Sartarelli, 2016. "Handedness, Earnings, Ability and Personality. Evidence from the Lab," PLOS ONE, Public Library of Science, vol. 11(10), pages 1-17, October.
    4. Guber, Raphael, 2019. "Making it right? Social norms, handwriting and human capital," Labour Economics, Elsevier, vol. 56(C), pages 44-57.
    5. Marcello Sartarelli, 2016. "Handedness, Ability, Earnings and Risk. Evidence from the Lab," Working Papers. Serie AD 2016-04, Instituto Valenciano de Investigaciones Económicas, S.A. (Ivie).
    6. Cho, Seungyeon, 2021. "Is handedness exogenously determined? Counterevidence from South Korea," Economics & Human Biology, Elsevier, vol. 43(C).

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    More about this item

    Keywords

    handedness; children; health; cognitive development; family fixed-effects;
    All these keywords.

    JEL classification:

    • I12 - Health, Education, and Welfare - - Health - - - Health Behavior
    • J10 - Labor and Demographic Economics - - Demographic Economics - - - General

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