Differential reproduction: its relation to IQ test score, education, and occupation.
D000328:Adult; D000704:Analysis of Variance; D004522:Educational Status; D005191:Family Characteristics; D005260:Female; D005298:Fertility; D005500:Follow-Up Studies; D006801:Humans; D007360:Intelligence; D008297:Male; D008910:Minnesota; D009790:Occupations; D012641:Selection, Genetic; D013223:Statistics as Topic