Annett's theory that individuals heterozygous for the right shift gene are intellectually advantaged: theoretical and empirical problems.

doi:10.1111/j.2044-8295.1993.tb02500.x

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Article

Annett's theory that individuals heterozygous for the right shift gene are intellectually advantaged: theoretical and empirical problems.

British journal of psychology (London, England : 1953) - 1 Nov 1993

McManus I C, Shergill S, Bryden M P

Abstract excerpt

Annett & Manning (1989; 1990a,b) have proposed that left-handedness is maintained by a balanced polymorphism, whereby the rs+/-heterozygote manifests increased intellectual ability compared with the rs-/- and rs+/+ homozygotes. In this paper we demonstrate that Annett's method of dividing subject...

Topics

Adolescent
Adult
Female
Functional Laterality
Genotype
Heterozygote
Humans
Intelligence
Intelligence Tests
Male
Polymorphism, Genetic

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