title: Aging and intelligence in young retarded adults: a cross-sectional study of fluid abilities in three samples.
mesh_terms: D000328:Adult; D000367:Age Factors; D000375:Aging; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008607:Intellectual Disability; D007360:Intelligence; D007361:Intelligence Tests; D008297:Male; D014705:Verbal Behavior