Skip Navigation


Archives of Clinical Neuropsychology Advance Access originally published online on September 24, 2009
Archives of Clinical Neuropsychology 2009 24(7):681-688; doi:10.1093/arclin/acp072
This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow All Versions of this Article:
24/7/681    most recent
acp072v1
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Miller, L. J.
Right arrow Articles by Mittenberg, W.
PubMed
Right arrow PubMed Citation
Right arrow Articles by Miller, L. J.
Right arrow Articles by Mittenberg, W.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

© The Author 2009. Published by Oxford University Press. All rights reserved. For permissions, please e-mail: journals.permissions@oxfordjournals.org.

Changes in Intellectual Functioning Associated with Normal Aging

Lori J. Millera,*, Allison Myersb, Lena Prinzib and Wiley Mittenbergb

a Department of Psychology, Eastern Mediterranean University, Famagusta, North Cyprus, Cyprus
b Center for Psychological Studies, Nova Southeastern University, Fort Lauderdale, FL, USA

* Corresponding author at: Eastern Mediterranean University, Faculty of Arts and Sciences, Department of Psychology, P.O. Box 95, Famagusta, North Cyprus, Mersin 10, Turkey. E-mail address: lori.miller{at}emu.edu.tr (L. Miller).


  Abstract

Declines in IQ scores with advancing age have been observed in each successive revision of the Wechsler Intelligence Scales. This study examined age-related changes on the fourth edition of the Wechsler Adult Intelligence Scale and compared these to the effects seen on the 1955, 1981, and 1997 standardizations of the scales. The most pronounced declines were in measures of processing speed and nonverbal reasoning. Declines in nonverbal reasoning were similar on timed and un-timed measures. Verbal abilities remained relatively stable across the life span. General intelligence as assessed by the Full Scale IQ was reduced about 1 SD by age 75 when corrections for age were removed. Age-related declines have become less pronounced since 1955, particularly on measures of processing speed. This effect was essentially linear, unrelated to concurrent IQ increases in the general population, and paralleled a 9-year increase in life expectancy during this time period.

Keywords Aging; WAIS IV; Intelligence

Accepted: August 28, 2009


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?




Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.