title: Levelling-sharpening in aged persons.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D003071:Cognition; D005260:Female; D005364:Field Dependence-Independence; D005556:Form Perception; D006801:Humans; D008297:Male; D008875:Middle Aged; D010551:Personality; D011581:Psychological Tests; D012858:Size Perception