title: Generational differences in spouse similarity in educational attainment.
mesh_terms: D000124:Achievement; D000328:Adult; D000368:Aged; D004522:Educational Status; D005006:Ethnicity; D005260:Female; D005838:Genotype; D006801:Humans; D007360:Intelligence; D008297:Male; D008393:Marriage; D008875:Middle Aged