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Annett's right shift model was used to show that presence of left-handedness in parents or grandparents is an extremely weak indicator of whether or not a person's handedness is influenced by genetic factors. Furthermore, where a genetic influence is present, familial sinistrality is only weakly related to underlying genotype. The usual rationale given for subdividing handedness groups according to familial sinistrality is logically indefensible.

Type

Journal article

Journal

Cortex

Publication Date

03/1990

Volume

26

Pages

153 - 155

Keywords

Functional Laterality, Humans