Standard Article

Alzheimer's Disease

  1. Melanie Greenaway,
  2. Allan Levey

Published Online: 30 JAN 2010

DOI: 10.1002/9780470479216.corpsy0041

Corsini Encyclopedia of Psychology

Corsini Encyclopedia of Psychology

How to Cite

Greenaway, M. and Levey, A. 2010. Alzheimer's Disease. Corsini Encyclopedia of Psychology. 1–4.

Author Information

  1. Emory University

Publication History

  1. Published Online: 30 JAN 2010


Alzheimer's disease (AD) is a progressive neurodegenerative disease, affecting memory, intellectual functions, and behavior. The prevalence of Alzheimer's disease is increasing with the growing percentage of the population over age 65. Two to three percent of those aged 65–69 have AD. This percentage doubles every five years until almost 1 out of 2 or 3 individuals over the age of 85 are reported to have AD (Kukull et al., 2002). Approximately 14–16 million persons are expected to have AD in the United States alone by mid-century.