Dot-Box plot of discriminant function versus diagnostic group in the MADRC cohort. FAQ item “remembering appointments”, AMNART IQ, age, and sex remained as significant predictors in the model that best discriminated between a diagnosis of CN and MCI. The blue diagonal line connecting the boxes for the respective diagnostic groups indicates the diagnostic group mean in each box, whereas the grey horizontal line across the entire figure indicates the grand mean. AMNART IQ (American National Adult Reading Test intelligence quotient), CN (clinically normal), FAQ (Functional Activities Questionnaire), MADRC (Massachusetts Alzheimer’s Disease Research Center), MCI (mild cognitive impairment).