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biological rhythm
distinct patterns of changes in the body
circadian rhythm
biological rhythm which has a length of 24 hours
what is the example of a circadian rhythm
sleep/wake cycle
who did the main study on sleep/wake cycle
Siffre
what was the procedure of Siffre’s study
Siffre spent 2 months in underground caves with no natural sunlight or clocks
what were the results from Siffre’s study
he maintained a natural sleep/wake cycle of around 25 hours despite seeing no sunlight
real life application - evaluation
nightshift workers make the most mistakes at 6 in the morning may have economic implications
individual differences - evaluation
Cziesler found individual differences in sleep cycles varying between 13-65 hours
methodological issues - evaluation
Siffre’s study uses artificial light which can still affect endogenous pacemakers