Distinguishing normal cognitive decline from more serious disorders

Data from two longitudinal studies of older adults (a nationally representative sample of older adults, and the Alzheimer’s Disease Neuroimaging Initiative) has found that a brief cognitive test can distinguish memory decline associated with healthy aging from more serious memory disorders, years before obvious symptoms show up.

Moreover, the data challenge the idea that memory continues to decline through old age: after excluding the cognitively impaired, there was no evidence of further memory declines after the age of 69.

The data found that normal aging showed declines in recollective memory (recalling a word or event exactly) but not in reconstructive memory (recalling a word or event by piecing it together from clues about its meaning, e.g., recalling that “dog” was presented in a word list by first remembering that household pets were presented in the list). However, declines in reconstructive memory were reliable predictors of future progression from healthy aging to mild cognitive impairment and Alzheimer’s.

http://www.futurity.org/memory-test-mistakes-can-flag-trouble-sooner/

[3556] Brainerd, C. J., Reyna V. F., Gomes C. F. A., Kenney A. E., Gross C. J., Taub E. S., et al.
(2014).  Dual-retrieval models and neurocognitive impairment.
Journal of Experimental Psychology: Learning, Memory, and Cognition. 40(1), 41 - 65.

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