T. Volken: The Impact of National IQ on Income and Growth

T. Volken: The Impact of National IQ on Income and Growth:

Abstract: "Recently Richard Lynn and Tatu Vanhanen have presented evidence that differences in national IQ account for the substantial variation in national per capita income and growth. This paper challenges these findings and claims that, firstly, they simply reflect inappropriate use and interpretations of statistical instruments. Secondly, it is argued that the models presented by Lynn and Vanhanen are under-complex and inadequately specified. More precisely the authors confuse IQ with human capital. The paper concludes that once control variables are introduced and the models are adequately specified, neither an impact of IQ on income nor on growth can be substantiated."