Primary mental abilities or general intelligence? Evidence from twin studies.
D000483:Alleles; D000704:Analysis of Variance; D001076:Aptitude; D001789:Blood Group Antigens; D003469:Culture; D005006:Ethnicity; D005260:Female; D006801:Humans; D007360:Intelligence; D008297:Male; D008433:Mathematics; D008568:Memory; D011247:Pregnancy; D012737:Sex Factors; D012923:Social Class; D012931:Social Environment; D013028:Space Perception; D013850:Thinking; D014427:Twins; D014429:Twins, Dizygotic; D014430:Twins, Monozygotic; D014705:Verbal Behavior; D014796:Visual Perception
D001789:Blood Group Antigens