It is believed that nightmares:
A) are the most common type of dyssomnia.
B) are not indicative of psychological or sleep disorders unless they occur frequently, cause difficulties returning to sleep, or cause daytime distress.
C) that occur during NREM slow-wave sleep are closely associated with the development of psychological disorders and sleep disorders.
D) are the most common type of parasomnia.

Question

Quizplus · Accepted Answer

Nightmares are a common and normal part of the sleep cycle. They may not indicate any psychological or sleep disorders unless they are frequent, cause difficulties returning to sleep, or cause daytime distress. However, if they occur during NREM slow-wave sleep, they may be closely associated with psychological and sleep disorders. Nightmares are not a type of dyssomnia or parasomnia.

It Is Believed That Nightmares