RealClearScience links to a Psychology Today article that argues if we are to go to year-round time, that should be standard time, not daylight savings time. Standard time more closely tracks the body’s circadian rhythms, it argues.
What PT doesn’t mention is that a natural experiment already exists. Most of Arizona stays on Mountain Standard Time year-round. The exception being the large but lightly populated Navaho Reservation.
Does the non-rez AZ population experience fewer of the negative effects attributed to time-switching per capita than an equivalent comparison population from other states? If so, are the differences large enough to justify the change to year-round time? Specifically, to year-round Standard Time?
We need this analysis.
