__________is a sleep disorder that is characterized by periodic, uncontrollable sleep attacks
a. Insomnia
b. Narcolepsy
c. Hypersomnia
d. Nonsomnia
Answer: B
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Women who are recently widowed tend to have ____ than recently widowed men.
A. greater financial loss B. less social relationships C. more physical/health problems D. less loss of social status
An investigator wants to test the effectiveness of visualization on sports performance. She randomly assigns participants to two groups. Participants in the visualization group imagine themselves swinging a golf club perfectly for 20 minutes prior to a session on the driving range. Participants in the control group read a golf magazine for 20 minutes prior to a session on the driving range. All participants do this procedure each day for five days. The dependent measure, the average flight distance of the ball, is calculated for each participant after each session. This is an example of a(n) ________ design.
A. 2 × 5 independent groups factorial B. IV × PV factorial C. 2 × 5 mixed factorial D. two-group pretest-posttest
Failing to reject the null hypothesis when the research hypothesis is true is
A) effect size. B) power. C) a Type I error. D) a Type II error.
For children diagnosed with autistic spectrum disorder, the ________.
A. brain is larger than normal at birth B. brain grows much slower during the first few years of life compared to those of nonautistic children C. amygdala is 13 percent smaller compared to that of nonautistic children D. frontal lobes are less well connected than in normal children