title: Diurnal and seasonal mood vary with work, sleep, and daylength across diverse cultures.
abstract: We identified individual-level diurnal and seasonal mood rhythms in cultures across the globe, using data from millions of public Twitter messages. We found that individuals awaken in a good mood that deteriorates as the day progresses--which is consistent with the effects of sleep and circadian rhythm--and that seasonal change in baseline positive affect varies with change in daylength. People are happier on weekends, but the morning peak in positive affect is delayed by 2 hours, which suggests that people awaken later on weekends.
authors.affiliation: Department of Sociology, Cornell University, Ithaca, NY 14853, USA. sag262@cornell.edu
authors.forename: Scott A
authors.initials: SA
authors.lastname: Golder
authors.forename: Michael W
authors.initials: MW
authors.lastname: Macy
mesh_terms: D000339:Affect; D057218:Blogging; D002940:Circadian Rhythm; D003431:Cross-Cultural Comparison; D006801:Humans; D012621:Seasons; D012890:Sleep; D014937:Work