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Direct linkRoivainen, Eka – Intelligence, 2012
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 IQ point…
Descriptors: Academic Achievement, Foreign Countries, Economic Factors, Social Influences
Corley, Janie; Crang, Jeremy A.; Deary, Ian J. – Intelligence, 2009
The Scottish Mental Survey of 1932 (SMS1932) provides a record of intelligence test scores for almost a complete year-of-birth group of children born in 1921. By linking UK Army personnel records, the Scottish National War Memorial data, and the SMS1932 dataset it was possible to examine the effect of childhood intelligence scores on wartime…
Descriptors: Intelligence Quotient, Intelligence Tests, Scores, Children
Sundet, Jon Martin; Borren, Ingrid; Tambs, Kristian – Intelligence, 2008
The present study investigates the impact of changing fertility patterns on the Flynn effect. Intelligence test data comprised scores of army conscripts on an arithmetic, language and a Raven-similar test, and a composite score (General Ability). Family data of the conscripts enabled a decomposition of the population mean into effects of sibship…
Descriptors: Intelligence, Intelligence Tests, Scores, Military Personnel
