Older brains make good use of 'useless' information

January, 2010

A new study finds a decision-making advantage to the increased difficulty older brains have in filtering out irrelevant information.

It’s now well established that older brains tend to find it harder to filter out irrelevant information. But now a new study suggests that that isn’t all bad. The study compared the performance of 24 younger adults (17-29) and 24 older adults (60-73) on two memory tasks separated by a 10-minute break. In the first task, they were shown pictures overlapped by irrelevant words, told to ignore the words and concentrate on the pictures only, and to respond every time the same picture appeared twice in a row. The second task required them to remember how the pictures and words were paired together in the first task. The older adults showed a 30% advantage over younger adults in their memory for the preserved pairs. It’s suggested that older adults encode extraneous co-occurrences in the environment and transfer this knowledge to subsequent tasks, improving their ability to make decisions.

Reference: 

[276] Campbell, K. L., Hasher L., & Thomas R. C.
(2010).  Hyper-binding: a unique age effect.
Psychological Science: A Journal of the American Psychological Society / APS. 21(3), 399 - 405.

Full text available at http://pss.sagepub.com/content/early/2010/01/15/0956797609359910.full

Related News

A small study comparing 38 younger adults (average age 22) and 39 older adults (average age 68) found that the older adults were less able to recognize when they made errors.

Can computer use, crafts and games slow or prevent age-related memory loss?

Americans with a college education live longer without dementia and Alzheimer's

Socially active 60-year-olds face lower dementia risk

Stressors in middle age linked to cognitive decline in older women

Data from some 900 older adults has linked stressful life experiences among middle-aged women, but not men, to greater memory decline in later life.

A study involving more than 2,500 older adults (65+) found that the rate of worsening vision was associated with the rate of cognitive decline. More importantly, vision has a stronger influence on cognition than the reverse.

Hearing loss linked to increased dementia risk

Chronic insomnia linked to memory problems

Link found between chronic inflammation and Alzheimer's gene risk

Brain scans of 9,772 people aged 44 to 79, who were enrolled in the UK Biobank study, have revealed that smoking, high blood pressure, high pulse pressure, diabetes, and high BMI — but not high cholesterol — were all linked to greater brain shrinkage, less

Pages

Subscribe to Latest newsSubscribe to Latest newsSubscribe to Latest health newsSubscribe to Latest news