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The effect of familial sinistrality and academic experience on cognition in right-handed women
Journal article   Peer reviewed

The effect of familial sinistrality and academic experience on cognition in right-handed women

Elizabeth A D'Andrea and Mary V Spiers
Neuropsychology, v 19(5), pp 657-663
Sep 2005
DOI: https://doi.org/10.1037/0894-4105.19.5.657
PMID: 16187884

Abstract

Adolescent Adult Cognition - physiology Educational Status Female Functional Laterality - genetics Functional Laterality - physiology Humans Multivariate Analysis Neuropsychological Tests - statistics & numerical data Psychomotor Performance - physiology Sex Characteristics Sex Factors Verbal Learning - physiology Visual Perception - physiology
Research in sex, brain lateralization, and cognition suggests that right-handed women vary in cognitive ability according to handedness inheritance patterns. Right-handed college women with positive familial sinistrality (FS+; i.e., the presence of at least one left-handed biological relative; n=30) were compared with right-handed women with negative familial sinistrality (FS-; n=30) by means of visuospatial (the Rey-Osterrieth Complex Figure Test and the Wechsler Adult Intelligence Scale--Revised Block Design subtest), verbal (the California Verbal Learning Test and Animal Naming), and motor performance tests (Finger Tapping and Grooved Pegboard). FS+ women outperformed FS- women on spatial tasks and used more efficient spatial strategies. The FS- group showed no corresponding verbal advantage. Spatial differences were not accounted for by motor skill, intellectual ability, or academic major.

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Neurosciences
Psychology
Psychology, Clinical
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