title: Phenotypic vs. genotypic sex and cognitive abilities.
abstract: As a test of whether sex differences in cognitive functioning are determined by chromosomal constitution or hormonal events, eight subjects whose phenotypic sex differed from their genotypic sex were given a standard intelligence test. The results indicated that differences between verbal and nonverbal abilities corresponded to phenotypic rather than genotypic sex. The roles of environmental factors, sex steroid hormones and alternate genetic mechanisms in determining intellectual dimorphisms are examined.
mesh_terms: D002877:Chromosomes, Human / Q000648:ultrastructure; D005260:Female; D005783:Gender Identity; D005838:Genotype; D006801:Humans; D007360:Intelligence; D007621:Karyotyping; D008297:Male; D009030:Mosaicism; D009634:Noonan Syndrome / Q000235:genetics / Q000523:psychology*; D010641:Phenotype; D014424:Turner Syndrome / Q000235:genetics / Q000523:psychology*