Early versus late MCI: Improved MCI staging using a neuropsychological approach

Introduction The Alzheimer's Disease Neuroimaging Initiative (ADNI) separates “early” and “late” mild cognitive impairment (MCI) based on a single memory test. We compared ADNI's MCI classifications to our neuropsychological approach, which more broadly assesses cognitive abilities. Methods Three hundred thirty‐six ADNI‐2 participants were classified as “early” or “late” MCI. Cluster analysis was performed on neuropsychological test data, and...