Study: Does IQ drop as people age?

May 01, 2006

U.S. scientists are attempting to determine if perception deficits that accompany aging in many people are responsible for declines in IQ scores.

Researchers at Case Western Reserve University's Mandel School of Applied Social Sciences conducted two coding experiments to test the hypothesis older people suffer perception problems that impair their abilities to perform well on intelligence tests.

Psychology Professor Grover Gilmore, who led the National Institute of Health-funded investigation, says perception deficits gradually appear over the life span of individuals and seem to reach problem levels in older adults and can greatly impact functions in people with dementia or other cognitive-impaired conditions.

"Even subtle deficits, such as a reduction in spatial contrast sensitivity, can impair performance on intelligence tests," concluded Gilmore.

The study is reported in the April issue of the American Psychological Association's journal Psychology and Aging.

Other investigators in the research were Ruth Spinks and Cecil Thomas.

Copyright 2006 by United Press International

Explore further: Neonatal vitamin K refusal tied to nonimmunization

add to favorites email to friend print save as pdf

Related Stories

How the brain recognizes objects

Jun 07, 2010

(PhysOrg.com) -- Researchers at MIT's McGovern Institute for Brain Research have developed a new mathematical model to describe how the human brain visually identifies objects. The model accurately predicts ...

Researchers develop mouse model of autism spectrum disorders

Sep 06, 2007

Howard Hughes Medical Institute researchers have genetically engineered mice that harbor the same genetic mutation found in some people with autism and Asperger syndrome. Mice with this mutation show a similar type of social ...

The matrix of autism

Aug 03, 2007

Autistic children are doubly stigmatized. On the one hand, they are often dismissed as “low functioning” or mentally retarded, especially if they have poor speaking skills as many do. Yet when autistics do show exceptional ...

Recommended for you

Pica in pregnant teens linked to low iron

6 hours ago

In a study of 158 pregnant teenagers in Rochester, NY, nearly half engaged in pica – the craving and intentional consumption of ice, cornstarch, vacuum dust, baby powder and soap, and other nonfood items, reports a new ...

User comments : 0