Stewart is a musician and often takes meth before his performances to help give him an "edge." Recently he has found that when he hasn't had a performance for several days and thus has not taken meth, he begins to feel fatigued and dragged out. He becomes high, agitated, and can't concentrate on his music. Stewart is demonstrating ____
a. an addiction c. psychological dependence
b. symptoms of withdrawal d. tolerance
B
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Which of these is a limitation of psychophysiological research methods?
a. Results do not generalize to other situations. b. These methods are inapplicable to infants. c. These methods tend to violate ethical guidelines. d. Measurements may be confounded by hunger or mood changes.
If you wanted to study the effects of caffeine on sleep, you could vary the consumption levels of caffeine. The administration of caffeine is
a. the treatment. c. unethical. b. the control. d. the dependent variable.
The search for a unique identity is the key developmental challenge of adolescence
Indicate whether the statement is true or false.
A basic principle of person perception is
a. our first impressions are not the most lasting impressions b. people form impressions of others only after they have gleaned lots of information c. people tend to form extensive impressions of others on the basis of very little information d. not many of us form first impressions of other people; we wait to pass judgment