title: Heritability of numerical facility.
mesh_terms: D000293:Adolescent; D001741:Black or African American; D001076:Aptitude; D005163:Factor Analysis, Statistical; D005260:Female; D005826:Genetics, Medical; D006801:Humans; D007360:Intelligence; D007361:Intelligence Tests; D008297:Male; D008433:Mathematics; D011247:Pregnancy; D014427:Twins