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J. Intell. 2015, 3(2), 41-45;

Zeroing in on the Genetics of Intelligence

†,* and
Biological Personality Psychology and Psychological Assessment, Institute of Psychology, Georg August University Göttingen, Goßlerstr. 14, 37073 Göttingen, Germany
These authors contributed equally to this work.
Author to whom correspondence should be addressed.
Academic Editor: Paul De Boeck
Received: 28 November 2014 / Accepted: 16 April 2015 / Published: 20 April 2015
(This article belongs to the Special Issue Intelligence, Where to Look, Where to Go?)
Full-Text   |   PDF [93 KB, uploaded 20 April 2015]


Despite the high heritability of intelligence in the normal range, molecular genetic studies have so far yielded many null findings. However, large samples and self-imposed stringent standards have prevented false positives and gradually narrowed down where effects can still be expected. Rare variants and mutations of large effect do not appear to play a main role beyond intellectual disability. Common variants can account for about half the heritability of intelligence and show promise that collaborative efforts will identify more causal genetic variants. Gene–gene interactions may explain some of the remainder, but are only starting to be tapped. Evolutionarily, stabilizing selection and selective (near)-neutrality are consistent with the facts known so far. View Full-Text
Keywords: intelligence; molecular genetics; behavior genetics; evolution intelligence; molecular genetics; behavior genetics; evolution
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Arslan, R.C.; Penke, L. Zeroing in on the Genetics of Intelligence. J. Intell. 2015, 3, 41-45.

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