Interacting sex and familial sinistrality characteristics influence both language lateralization and spatial ability in right handers.
In 1981 McKeever and Hoff found a pattern of sex-familial sinistrality (FS)-visual field interaction on an Object Naming Latency Task. The FS - females and FS + males performed more symmetrically. Also in 1981, Hécaen, DeAgostini, and Monzon-Montes found a substantially lower incidence of aphasia following left hemisphere lesions in FS - females and FS + males. Both findings suggest a less strict left hemisphere dominance in FS - females and FS + males. We report a replication of the McKeever and Hoff findings and also evidence of a pattern of sex-FS interaction in spatial visualization ability wherein FS - females and FS + males perform better than FS + females and FS - males.
D000328:Adult; D004193:Discrimination Learning; D004292:Dominance, Cerebral; D005260:Female; D005556:Form Perception; D007839:Functional Laterality; D006801:Humans; D008297:Male; D010641:Phenotype; D011930:Reaction Time; D012660:Semantics; D012737:Sex Factors; D013028:Space Perception