Abstract
Age-adjusted normative data are presented for persons over age 55 on the Mattis Dementia Rating Scale. Additional adjustment for the effect of education on test performance is also provided. These data were collected as part of Mayo's Older Americans Normative Studies (MOANS) in a continuing effort to develop age-appropriate norms for older persons on commonly used neuropsychological tests. The normative data presented here should prove more useful in characterizing the presence and severity of general cognitive dysfunction than currently available norms. Limitations and unique features of MOANS normative data are also discussed.
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