• Older and wiser? : birth order and IQ of young men 

      Black, Sandra E.; Devereux, Paul J.; Salvanes, Kjell Gunnar (Working paper, Working paper, 2007-08)
      While recent research finds strong evidence that birth order affects children’s outcomes such as education and earnings, the evidence on the effects of birth order on IQ is decidedly mixed. This paper uses a large dataset ...
    • Small family, smart family? : family size and the IQ scores of young men 

      Black, Sandra E.; Devereux, Paul J.; Salvanes, Kjell Gunnar (Working paper, Working paper, 2007-08)
      How do families influence the ability of children? Cognitive skills have been shown to be a strong predictor of educational attainment and future labor market success; as a result, understanding the determinants of cognitive ...