Which of the following is true about REM sleep?
A. We are more likely to dream during REM sleep than at any other time during the night.
B. Adults spend most of their sleeping hours in REM sleep.
C. Muscles are more tense and active during REM sleep than non REM sleep.
D. Only about half of all adults experience REM sleep.
A
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Which of these problems is common in Korsakoff's syndrome and in other people with damage to the prefrontal cortex?
a. Using guesses to fill in the gaps in memory b. Remembering only the sad events in life and not the pleasant ones c. Excessive doubts about whether a decision was a good one d. Habitually repeating someone's question aloud before answering it
According to the James-Lange theory, what is responsible for the feeling aspect of an emotion?
a. Perception of changes in the body b. Conditioned responses to sudden stimuli c. Slow, high-amplitude waves of activity in the cerebral cortex d. The ratio of dopamine to serotonin in the cerebral cortex
A behaviourist arranges a choice situation in which a rat is exposed to two levers. For every 100 times the rat presses the right lever, it receives seven food pellets. For every 20 times the rat presses the left lever, it receives one food pellet. Both levers produce food on a _____-ratio schedule of reinforcement and rational choice theory predicts preference for the _____ lever.
A) fixed; left B) fixed; right C) variabl; left D) variabl; right
Addie joined a stamp-collecting group so she could learn more about rare and valuable stamps. Which best explains why she joined the group?
A. social support B. sense of identity C. safety D. meaningful information