Older and Wiser? Birth Order and IQ of Young Men

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

NBER Working Paper No. 13237
Issued in July 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 are grateful to the Medical Birth Registry for Norway for providing the birth registry data. 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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