title: Twin studies, heritability, and intelligence.
authors.forename: M W
authors.initials: MW
authors.lastname: Feldman
authors.forename: S P
authors.initials: SP
authors.lastname: Otto
mesh_terms: D000368:Aged; D000375:Aging / Q000235:genetics; D006801:Humans; D007360:Intelligence / Q000235:genetics*; D016014:Linear Models; D015233:Models, Statistical; D012107:Research Design; D018433:Twin Studies as Topic / Q000706:statistics & numerical data*; D014429:Twins, Dizygotic / Q000235:genetics; D014430:Twins, Monozygotic / Q000235:genetics