Scientists Identify a Speech Trait

Scientists Identify a Speech Trait That Foreshadows Cognitive Decline
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However, a recent study from the University of Toronto suggests that
it's the speed of speech, rather than the difficulty in finding words
that is a more accurate indicator of brain health in older adults.
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Interestingly, the study found that the natural speech speed of older
adults was related to their quickness in naming pictures. This
highlights that a general slowdown in processing might underlie
broader cognitive and linguistic changes with age, rather than a
specific challenge in memory retrieval for words.

https://www.sciencealert.com/scientists-identify-a-speech-trait-that-foreshadows-cognitive-decline

might underlie broader cognitive and linguistic changes with age,

Might - expressing a possibility based on an unfulfilled condition

Btw, relative to their yardstick that was created  by "publish or
perish"