Lisa L. Barnes and Robert S. Wilson are with the Rush Alzheimer’s Disease Center and the Departments of Neurological Sciences and Behavioral Sciences, Rush University Medical Center, Chicago, IL. Carlos F. Mendes de Leon, Julia L. Bienias, and Denis A. Evans are with the Rush Institute for Healthy Aging and the Department of Internal Medicine, Rush University Medical Center, Chicago. At the time the research was completed, Tené T. Lewis was in the Department of Preventive Medicine, Rush University...