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  1. William E. Haley1,
  2. Jung Kwak2

Published Online: 30 JAN 2010

DOI: 10.1002/9780470479216.corpsy0384

Corsini Encyclopedia of Psychology

Corsini Encyclopedia of Psychology

How to Cite

Haley, W. E. and Kwak, J. 2010. Gerontology. Corsini Encyclopedia of Psychology. 1–2.

Author Information

  1. 1

    University of South Florida

  2. 2

    University of Wisconsin—Milwaukee

Publication History

  1. Published Online: 30 JAN 2010


Significant improvement in public health and advancement in medical technology in the twentieth century led to increasing life expectancy and remarkable growth in the older adult population. According to the 2000 U.S. Census, 35 million older Americans, 12.4% of the U.S. population, is over the age of 65. With the aging of the baby boom cohort, there will be 70.3 million Americans over age 65 in the year 2030. The rapid growth of the older population and significant changes associated with multiple aging, physical, psychological, and social dimensions suggest that knowledge about gerontology (the scientific study of the process of aging and aging experience) and geriatrics (the branch of medicine studying clinical aspects of aging) will become vital for researchers, clinicians, and policy makers.


  • aging;
  • gerontology;
  • geriatrics