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Article

Genetic covariance among measures of information processing speed, working memory, and IQ.

Behavior genetics - 1 Nov 2001

Luciano M, Wright M, Smith G A, Geffen G M, Geffen L B, Martin N G

Abstract excerpt

The genetic relationship between lower (information processing speed), intermediate (working memory), and higher levels (complex cognitive processes as indexed by IQ) of mental ability was studied in a classical twin design comprising 166 monozygotic and 190 dizygotic twin pairs. Processing speed was measured by a choice reaction time (RT) task (2-, 4-, and 8-choice), working memory by a visual-spatial delayed...

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Identifiers

PMID: 11838535
DOI: 10.1023/a:1013397428612

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-08.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

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