Cataplexy may be brought on by

A) strong emotions or physical exertion.
B) overuse of caffeine.
C) high blood levels of carbon dioxide in the blood.
D) damage to neurons that initiate REM sleep.
E) staying awake for long periods of time.

Answer: A

Psychology

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If the effect of the independent variable cannot be separated from the effect of an

extraneous variable, then an experiment is _____ . a. confounded b. unreliable c. complex d. ambiguous

Psychology

You are watching a pigeon pecking a key for food reinforcement. The pigeon pecks at a very high, steady rate, but it also takes breaks from pecking each time food is delivered. Based on what is known about the pattern of responding produced by various schedules of reinforcement, you should conclude that the reinforcement schedule that is in place for this pigeon is a:

a. variable-ratio schedule b. fixed-interval schedule c. variable-interval schedule d. fixed-ratio schedule

Psychology