During the night, which two types of sleep alternate with each other in cycles that take approximately 90 minutes?
a. alpha sleep and delta sleep
b. Stage 1 and Stage 2 sleep
c. REM and NREM sleep
d. relaxed sleep and alert sleep
Answer: c
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One potential problem for systematic naturalistic observation is
a. unacceptability. b. impracticality. c. inefficacy. d. irreversibility.
An aptitude test measures:
a. basic personality characteristics b. current level of knowledge in a particular subject c. general intelligence and overall level of cognitive function d. potential for success in a given area
The "date-rape" drug Rohypnol (flunitrazepam)
A. is no longer manufactured legally. B. is sold as a hypnotic agent (sleeping pill) in many countries other than the U.S. C. was never marketed by any company because of its unusual impairment of memory. D. is available by prescription in the U.S.
What did a study of 500 pairs of MZ and DZ twins done in Kentucky find, in terms of intelligence?
a. The correlations between MZ twins and the correlations between DZ twins were similar. b. The correlations between DZ twins were about the same as those between other siblings. c. MZ twins were generally smarter than DZ twins. d. DZ twins were generally smarter than MZ twins.