According to the information discussed in the In Focus box titled "What You Really Want to Know About Sleep," which of the following statements is FALSE?
A) Research has contradicted the notion that too much carbon dioxide or too little oxygen in a person's blood causes yawning.
B) Deaf people who use sign language sometimes "sleep sign" during sleep.
C) Contagious yawning may have evolved as an adaptive social cue, helping groups to signal and coordinate times of activity or rest.
D) Sleep paralysis is a rare phenomenon and is usually associated with sleep disorders such as narcolepsy.

Question

Quizplus · Accepted Answer

The statement "Sleep paralysis is a rare phenomenon and is usually associated with sleep disorders such as narcolepsy" is false. Sleep paralysis is a common phenomenon and can occur in people who do not have any underlying sleep disorders.

According to the Information Discussed in the in Focus Box