The patterns of electrical activity in the brain during sleeping and waking are identified through the use of:
A) electroencephalographs.
B) a computerized axial tomography scan.
C) functional magnetic resonance imaging.
D) positron emission tomography.
A) electroencephalographs.
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Why can meditation be helpful in managing stress?
A. It involves removing bothersome thoughts and replacing them with positive ones. B. Since it is often done in groups, it can help facilitate social interaction. C. By displaying our physiological responses on a computer, we can learn to control them. D. It helps us make threat appraisals.
Many psychological studies lack ethnic diversity. This decreases what?
A. internal validity B. design effects C. reliability D. generalizability
Many items on a "culture-fair" test require the use of
a. nonverbal abilities such as rotating objects. b. verbal knowledge. c. musical knowledge. d. knowledge of major world historical figures. e. reading knowledge.
Amphetamines, cocaine, caffeine, and nicotine are classified as ______
a. hallucinogens c. stimulants b. catatonics d. depressants