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: Maker of device in 'superbug' outbreak lacked FDA clearance

add to favorites email to friend print save as pdf

Related Stories

Why your laptop battery won't kill you

6 hours ago

News on Tuesday that major U.S. airlines are no longer going to ship powerful lithium-ion batteries might lead some to fret about the safety of their personal electronic devices.

Visa, MasterCard moving into mobile pay in Africa

6 hours ago

Americans may just be getting used to mobile pay, but consumers in many African countries have been paying with their phones for years. Now payment processors Visa and MasterCard want to get a slice of that market, and are ...

Recommended for you

Popular antioxidant likely ineffective, study finds

13 minutes ago

The popular dietary supplement ubiquinone, also known as Coenzyme Q10, is widely believed to function as an antioxidant, protecting cells against damage from free radicals. But a new study by scientists at McGill University ...

A look at the growing use of synthetic drugs

16 minutes ago

In recent years, hundreds of new synthetic recreational drugs have emerged – drugs that neither the general public nor the scientific community know very much about. Many of these new synthetic drugs – ...

Research suggests brain's melatonin may trigger sleep

36 minutes ago

If you walk into your local drug store and ask for a supplement to help you sleep, you might be directed to a bottle labeled "melatonin." The hormone supplement's use as a sleep aid is supported by anecdotal ...

New findings on 'key players' in brain inflammation

37 minutes ago

Inflammation is the immune system's natural reaction to an 'aggressor' in the body or an injury, but if the inflammatory response is too strong it becomes harmful. For example, inflammation in the brain occurs ...

Autism detection improved by multimodal neuroimaging

37 minutes ago

In an ancient Indian parable, a group of blind men touches different parts of a large animal to find what it is. Only when they share the descriptions of an ear, tail, trunk and leg do they know it is an ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.