Greater Cognitive Intraindividual Variability Predicts Faster Decline in Everyday Functioning: Moderating Effects of Amyloid Status and APOE Genotype

Abstract

Background: Cognitive intraindividual variability (IIV), or within‐person variability across cognitive measures at a single time point, is associated with increased risk of mild cognitive impairment (MCI) and Alzheimer's disease (AD) dementia.