A very large study (Roenneberg et al.,2007)of 55,00 Europeans from childhood through late adulthood found that eveningness peaked at what age?

Question

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The study by Roenneberg et al. (2007) found that the preference for eveningness, or being more active and alert in the evening, peaked at around 20 to 21 years of age. This is consistent with the understanding that young adults tend to have later sleep schedules compared to children or older adults.

A Very Large Study (Roenneberg Et Al