Exposure to intense light early in the morning following an east-bound flight
A) accelerates adaptation to the phase advance.
B) accelerates adaptation to the phase delay.
C) slows adaptation to the phase advance.
D) slows adaptation to the phase delay.
E) both B and C
Question 2
The main evidence that circadian sleep-wake and body-temperature cycles are not causally related is that they
A) are always internally desynchronized.
B) frequently become internally desynchronized under normal living conditions.
C) sometimes become internally desynchronized under free-running conditions.
D) usually have different free-running periods.
E) are negatively correlated.