A disruption in circadian rhythms that afflicts many college students is __________

A) advanced sleep phase syndrome.
B) delayed sleep phase syndrome.
C) advanced waking phase syndrome.
D) delayed waking phase syndrome.

Delayed Sleep Phase Syndrome

This syndrome is a circadian rhythm disorder where an individual's sleep is delayed by two or more hours, causing difficulty in waking up at conventional times.

Circadian Rhythms

Biological processes that display an endogenous, entrainable oscillation of about 24 hours, regulating the sleep-wake cycle among other bodily functions.

Advanced Sleep Phase Syndrome

A circadian rhythm disorder characterized by earlier than desired sleep onset and wake times, often resulting in evening sleepiness and morning alertness.