Apart from the severity of the physiological symptoms, how else might you distinguish between sleep terrors and nightmares?
a) Sleep terrors occur out of Stage 4 sleep; nightmares occur out of REM sleep.
b) Adults tend to have sleep terrors; children are more likely to have nightmares.
c) Sleep terrors tend to occur later in sleep; nightmares tend to occur early in sleep.
d) The content of a sleep terror is often remembered because of its violent nature; the content of nightmares is rarely recalled.
A
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After marriage, other-sex friendships
A) increase for both sexes. B) increase for men. C) increase for women. D) are rare for both sexes.
In selecting representative samples, the technique that specifies that the researcher begins by identifying a large number of units of individuals who have a feature in common, and then randomly selects some of those units, is known as
a. simple random sampling. b. stratified random sampling. c. cluster sampling. d. nonprobability sampling.