University of Toronto study links speech speed to cognitive function

Researchers from the University of Toronto and the Rotman Research Institute of Baycrest have conducted a study to determine how speech patterns relate to cognitive changes during aging. The study involved 125 healthy adults ranging from 18 to 85 years old.

By using image naming tests and analyzing recordings of participants describing complex scenes, researchers found that the frequency and duration of pauses during speech were not primary indicators of cognitive performance. Instead, the overall speed of speech and the speed of word retrieval were more significant factors.

While faster word retrieval correlated with a smoother flow of natural speech, experts caution that slower speech alone is not a diagnostic tool for dementia. The study, published in ‘Aging, Neuropsychology, and Cognition’, suggests that while speech speed is a useful metric for assessing cognitive function, longitudinal studies are required to determine if these patterns can reliably predict future cognitive decline.