Jensenism

Arthur Jensen (1923- )

"Any explanation of the secular change in IQ test raw scores must take account of the fact that, unlike the population means, there are certain properties of the IQ that have remained virtually constant across the past sixty or seventy years. These include its reliability, its correlations with measures of other psychometric abilities, its G loading, and its external validity…" Also Jensen, using Spearman's rho (a powerful statistical tool), showed that the increases in test scores have nothing to do with the G-loadings of the tests (in other words, more G does not mean more Flynn effect). The Flynn effect is probably due to a group factor that cuts across the traditional structure of abilities: most G-loaded tests would "carry" the Flynn factor to a significant degree (like a parasite). This group factor has not been identified precisely but a decrease in field dependence is probably involved. To be stressed here is the established fact that superior performance in cognitive tasks that require field independence carries no implication about competence in other classes of cognitive tasks" (p. 322).

Jensen, A. R. (1998). The g factor: The science of mental ability. Westport, CN: Praeger.

Jensen wrote extensively that IQ is genetic in origin and can explain the "Black-White" IQ gap. He highlighted the neglected issue of the part genetics could play in the formation of intelligence.

Jensen published his book The g-factor: The science of mental ability (1998), supported the initial investigations of Spearman. Some consider the book the pinnacle of research fundamentals for future endeavors on the topic of g.

Ref:

http://www.euvolution.com/articles/jensen.html

http://www.psych.utoronto.ca/~reingold/courses/intelligence/cache/1198gottfred.html