Here, we present a method to investigate diurnal rhythms in performance following accurate categorization of participants into circadian phenotype groups based on the Munich ChronoType Questionnaire, gold standard circadian phase biomarkers and actigraphic measures.
Facer-Childs, E. R., Middleton, B., Bagshaw, A. P., Skene, D. J. Human Circadian Phenotyping and Diurnal Performance Testing in the Real World. J. Vis. Exp. (158), e60448, doi:10.3791/60448 (2020).