Journal ArticleDOI
Why national IQs do not support evolutionary theories of intelligence
TLDR
Kanazawa et al. as discussed by the authors showed that the Flynn Effect is either nonexistent or invariant with respect to different regions of the world, that there have been no migrations and climatic changes over the course of evolution, and that there has been no trends over the last century in indicators of reproductive strategies (e.g., declines in fertility and infant mortality).About:
This article is published in Personality and Individual Differences.The article was published on 2010-01-01. It has received 62 citations till now. The article focuses on the topics: Flynn effect & Intelligence quotient.read more
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Journal ArticleDOI
Parasite prevalence and the worldwide distribution of cognitive ability
TL;DR: Infectious disease remains the most powerful predictor of average national IQ when temperature, distance from Africa, gross domestic product per capita and several measures of education are controlled for, and the Flynn effect may be caused in part by the decrease in the intensity of infectious diseases as nations develop.
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One Century of Global IQ Gains: A Formal Meta-Analysis of the Flynn Effect (1909–2013)
Jakob Pietschnig,Martin Voracek +1 more
TL;DR: Findings include that IQ gains vary according to domain, are stronger for adults than children, and have decreased in more recent decades, while factors associated with life history speed seem mainly responsible for the Flynn effect’s general trajectory.
Journal ArticleDOI
Innovation in the collective brain.
TL;DR: It is argued that rates of innovation are heavily influenced by (i) sociality, (ii) transmission fidelity, and (iii) cultural variance, and some of the forces that affect these factors can also shape each other.
Journal Article
Intelligence: A Measure of Human Capital in Nations
Gerhard Meisenberg,Richard Lynn +1 more
TL;DR: In this article, the authors describe two measures of cognitive human capital: the average IQ of the population, and the performance of school children on international scholastic assessment tests in mathematics, science, and reading.
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Raven’s test performance of sub-Saharan Africans: average performance, psychometric properties, and the Flynn Effect
TL;DR: In this article, a systematic review of published data on the performance of sub-Saharan Africans on the Raven's Progressive Matrices is presented, where the specific goals were to estimate the average level of performance, to study the Flynn Effect in African samples, and to examine the psychometric meaning of Raven's test scores as measures of general intelligence.
References
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Book
Guns, Germs, and Steel: The Fates of Human Societies
TL;DR: Guns, Germs, and Steel as discussed by the authors argues that geographical and environmental factors shaped the modern world, and argues that societies that had had a head start in food production advanced beyond the hunter-gatherer stage, and then developed religion and nasty germs and potent weapons of war.
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Massive IQ gains in 14 nations: What IQ tests really measure.
TL;DR: In this article, the authors show that IQ tests do not measure intelligence but rather a correlate with a weak causal link to intelligence, which can explain differential trends on various mental tests, such as the combination of IQ gains and Scholastic Aptitude Test losses in the United States.
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How Much Does Schooling Influence General Intelligence and Its Cognitive Components? A Reassessment of the Evidence.
TL;DR: This article found that much of the causal pathway between IQ and schooling points in the direction of the importance of the quantity of schooling one attains (highest grade successfully completed), which fosters the development of cognitive processes that underpin performance on most IQ tests.
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Heritability estimates versus large environmental effects: the IQ paradox resolved.
TL;DR: The authors present a formal model of the process determining IQ in which people's IQs are affected by both environment and genes, but in which their environments are matched to their IQs.