title: Differential fertility and intelligence: current status of the problem.
mesh_terms: D000124:Achievement; D001723:Birth Rate; D002648:Child; D004777:Environment; D005191:Family Characteristics; D005193:Family Planning Services; D005260:Female; D005298:Fertility; D006579:Heterozygote; D006720:Homozygote; D006801:Humans; D008607:Intellectual Disability / Q000235:genetics; D007360:Intelligence; D007361:Intelligence Tests; D008297:Male; D010641:Phenotype; D011247:Pregnancy; D012641:Selection, Genetic; D012959:Socioeconomic Factors; D006113:United Kingdom; D014481:United States