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Small Family, Smart Family?: Family Size and the IQ Scores of Young Men

Small Family, Smart Family?: Family Size and the IQ Scores of Young Men Abstract: This paper uses Norwegian data to estimate the effect of family size on IQ scores of men. Instrumental variables (IV) estimates using sex composition as an instrument show no significant negative effect of family size; however, IV estimates using twins imply that family size has a negative effect on IQ scores. Our results suggest that the effect of family size depends on the type of family-size intervention and that there are no important negative effects of expected increases in family size. However, unexpected shocks to family size resulting from twin births have negative effects on the IQ scores of existing children. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Human Resources University of Wisconsin Press

Small Family, Smart Family?: Family Size and the IQ Scores of Young Men

Journal of Human Resources , Volume 45 (1) – Apr 4, 2010

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Publisher
University of Wisconsin Press
Copyright
Copyright © University of Wisconsin Press
ISSN
1548-8004
Publisher site
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Abstract

Abstract: This paper uses Norwegian data to estimate the effect of family size on IQ scores of men. Instrumental variables (IV) estimates using sex composition as an instrument show no significant negative effect of family size; however, IV estimates using twins imply that family size has a negative effect on IQ scores. Our results suggest that the effect of family size depends on the type of family-size intervention and that there are no important negative effects of expected increases in family size. However, unexpected shocks to family size resulting from twin births have negative effects on the IQ scores of existing children.

Journal

Journal of Human ResourcesUniversity of Wisconsin Press

Published: Apr 4, 2010

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