We are pleased to announce that Topics in Cognitive Science has just released our extended article The myth of cognitive decline: Non-linear dynamics of lifelong learning, with a companion introduction to the research by Profs Wayne Gray and Thomas Hills, who ask: Does cognition deteriorate with age or is it enhanced by experience?
Abstract for “The Myth of Cognitive Decline”
As adults age, their performance on many psychometric tests changes systematically, a finding that is widely taken to reveal that cognitive information-processing capacities decline across adulthood. Contrary to this, we suggest that older adults’ changing performance reflects memory search demands, which escalate as experience grows. A series of simulations show how the performance patterns observed across adulthood emerge naturally in learning models as they acquire knowledge. The simulations correctly identify greater variation in the cognitive performance of older adults, and successfully predict that older adults will show greater sensitivity to fine-grained differences in the properties of test stimuli than younger adults. Our results indicate that older adults’ performance on cognitive tests reflects the predictable consequences of learning on information-processing, and not cognitive decline. We consider the implications of this for our scientific and cultural understanding of aging.
You can check out some of the press at Language Log, The New York Times, National Geographic, The Telegraph, The Independent, Psychology Today (in Fulfillment at Any Age & Statistical Life), The Daily Mail, Forbes, The Huffington Post, The National Post, The Times of India, and Gawker. Or listen to the radio segment on the BBC’s World Service. There’s also a lively comment thread over at Reddit Science.