Input from Ib sensory fibers
A. inhibits the activity of alpha motor neurons.
B. activates alpha motor neurons.
C. contracts muscle spindles.
D. contracts muscles.
Answer: A
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In Pavlov's experiments with dogs, salivation to the bell was the
a. conditioned response. b. unconditioned stimulus. c. conditioned stimulus. d. unconditioned response.
For most minority families, ethnic socialization is carried out
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Dr. Harem is studying the effects of drugs on memory. He gives his participants several
lists of nonsense words. After the participants study a list for five minutes, he measures their memory ability by asking them to write down all the nonsense words that they can recall in two minutes. Which of the following statements about this study is true? a. The independent variable is the number of words that subjects can recall. b. Dr. Harem's study has one control group and two experimental groups. c. The control group in this study is given lists of nonsense words to memorize. d. Dr. Harem has operationally defined the variable of memory ability. e. The experiment is confounded by the use of nonsense words.