Centre for Policy on Ageing



Evidence for genetic mediation of executive control — a study of aging male twins
Author(s)	Gary E Swan, Dorit Carmelli
Journal title	Journals of Gerontology: Series B, Psychological Sciences and Social Sciences, vol 57B, no 2, March 2002
Pages	pp P133-P143
Keywords	Older men ; Twins ; Biological ageing ; Evaluation ; United States of America.
Annotation	The genetic and environmental influences on indices of executive control of 80 monozygotic and 78 dizygotic older male twins (members of the US National Heart, Lung and Blood Institute Twin Study) are investigated. Multivariate genetic modelling was applied to performance in four tests: Digit Symbol Substitution, colour-word interference, Trail Making B, and verbal fluency. Of these tests, Digit Symbol Substitution appeared to be the marker of executive control with the largest genetic component, whereas verbal fluency stood out as displaying a pattern of genetic and environmental influence distinct from the other three measures. (RH).
Accession Number	CPA-020614204 A
Classmark	BC: SVR: BH: 4C: 7T
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...from the Ageinfo database published by Centre for Policy on Ageing.