Dot-Box plot of discriminant function (linear combination of product of discriminating variables and their respective coefficients) versus diagnostic group in the ADNI cohort. FAQ items “remembering appointments” and “assembling tax records”, and AMNART IQ 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. ADNI (Alzheimer’s Disease Neuroimaging Initiative), AMNART IQ (American National Adult Reading Test intelligence quotient), CN (clinically normal), FAQ (Functional Activities Questionnaire), MCI (mild cognitive impairment).