A study found that normal sleep duration (7-9 hours) and evening chronotypes are associated with better cognitive performance in older adults. Both short and extended sleep durations negatively impacted cognition, while health factors such as age, diabetes, and cardiovascular conditions were also significant predictors of cognitive decline.
The study suggests that individuals with an evening chronotype (night owls) tend to perform better on cognitive tests compared to those with a morning chronotype (early risers). This finding indicates that night owls might have an advantage in certain cognitive functions, which could be interpreted as a sign of higher cognitive performance, though it does not directly claim that night owls are smarter than early risers.
https://bmjpublichealth.bmj.com/content/2/1/e001000
Ils en parlent : https://www.slate.fr/story/267534/cerveau-couche-tard-tot-nuit-sommeil-dormir-capacite-cognitives-intelligence-memoire
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