NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

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

Sandra E. Black, Paul J. Devereux, Kjell G. Salvanes

NBER Working Paper No. 13336
Issued in August 2007

---- Acknowledgements -----

Black and Devereux gratefully acknowledge financial support from the National Science Foundation and the California Center for Population Research. Salvanes thanks the Research Council of Norway for financial support. We would like to thank Josh Angrist and seminar participants at UCD Geary Institute, Pompeu Fabra, CEMFI Madrid, the Society of Labor Economists, and the CEPR conference on The Formation and Use of Human Capital and Knowledge in Bergen, Norway for useful suggestions. We are grateful to the Medical Birth Registry for Norway for providing the birth registry data. We are also indebted to Stig Jakobsen who was instrumental in obtaining data access to the IQ data from the Norwegian Armed Forces. The views expressed herein are those of the author(s) and do not necessarily reflect the views of the National Bureau of Economic Research.

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