IQ

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IQ (intelligence quotient) is a psychometric method considered to measure general intelligence and derived from the fact that various tests of cognitive ability tend to have highly correlated scores for an individual. The correlations are due to a hypothesised general factor of intelligence or g. IQ correlates well with educational achievement and job performance, and is predictive of these traits. The validity of IQ as a measure of intelligence enjoys a broad consensus in modern academic psychology.

[edit] Heritability

Though numerous familial and twin studies have found strong heritability correlations to IQ, all attempts to find direct genetic relationships that drive IQ scores have failed to deliver on the expectations of that heritability [1][2]. This "heritability paradox" has some explanations with serious academic weight, such as by epigentic characteristics[1], such as imprinting, which can be passed from parent to child without any permanent multi-generational genes attached, and common developmental factors such as nutrition and in-vito testosterone exposure.

[edit] See Also

[edit] Footnotes

  1. 1.0 1.1 Human Intelligence and Polymorphisms in the DNA Methyltransferase Genes Involved in Epigenetic Marking
  2. Mendelian and polygenic inheritance of intelligence: A common set of causal genes? Using next-generation sequencing to examine the effects of 168 intellectual disability genes on normal-range intelligence
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