På konferens i USA, där jag bl a träffade Garrett Jones, som - i strid med all politisk korrekthet - testat att inkludera nationella IQ-mått i tillväxtregressioner.
Han finner att om humankapital förklarar tillväxt, kommer detta från IQ, inte från utbildning:
Intelligence, Human Capital, and Economic Growth: A Bayesian Averaging of Classical Estimates (BACE) Approach
Abstract:
Human capital plays an important role in the theory of economic growth, but it has been difficult to measure this abstract concept. We survey the psychological literature on cross-cultural IQ tests and conclude that intelligence tests provide one useful measure of human capital. Using a new database of national average IQ, we show that in growth regressions that include only robust control variables, IQ is statistically significant in 99.8% of these 1330 regressions, easily passing a Bayesian model-averaging robustness test. A 1 point increase in a nation's average IQ is associated with a persistent 0.11% annual increase in GDP per capita.
Jones, Garett; Schneider, W. Joel, Journal of Economic Growth, 2006
Se även Niclas inlägg i frågan.