Introduction to Psychology 10th Edition by Rod Plotnik,Haig Kouyoumdjian

Exercise 27

If we travel across time zones and our circadian rhythm gets out of phase with the local clock time, we experience difficulty in going to sleep and getting up at normal times, a condition known as (a) _____. Researchers have been able to reset circadian rhythms in workers by exposing them to bright light during certain times; this is called (b) _____therapy.