For several months now, Warren has gone to bed at his usual time, but has awakened at 2 a.m. He finds that no matter what he does, he can't go back to sleep after he wakes up at this early hour. It is likely that Warren is suffering from:
a. hypersomnia
b. sleep apnea
c. insomnia
d. parasomnia
C
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For a fixed level of significance, how is the critical value for chi-square related to degrees of freedom?
a. The critical value increases as df increases. b. The critical value decreases as df increases. c. The critical value increases as sample size increases. d. The critical value decreases as sample size increases.
Which characteristic indicates to a trained observer that a person's smile is NOT sincere?
A) The smile includes a crinkling of the corners of their eyes. B) The smile is slightly lopsided. C) The smile lasts for about 3 seconds. D) The smile engages the zygomatic major muscle.
According to Gernsbacher's (1997) Structure Building Framework, which sentence of a paragraph do people usually read most slowly, and why?
a. the first, because they are laying a foundation for the ideas that follow b. the last, because they are integrating the meanings of the individual statements c. the first, because they are adjusting their comprehension to the difficulty-level and style of the author d. the last because it summarizes information in the preceding sentences
Research suggests that hypnosis may be a valuable aid to pain reduction
a. true b. false