title: Selective emigration and the decline of intelligence in Scotland.
mesh_terms: D000124:Achievement; D002648:Child; D002675:Child, Preschool; D004493:Education / Q000592:standards; D004641:Emigration and Immigration; D004739:England; D004777:Environment; D006801:Humans; D007360:Intelligence; D012606:Scotland; D012641:Selection, Genetic