について調べたフィンランドの研究者Eka Roivainenの論文をUDADISIが紹介している。 以下はその要旨。 Lynn and Vanhanen (2012) have convincingly established that national IQs correlate positively with GDP, education, and many other social and economic factors. The direction of causality remains debatable. The present study re-examines data from military psychological assessments of the German federal army that show strong IQ gains of 0.5 I