Which is a common symptom of posttraumatic stress disorder?
a. emotional numbness
b. difficulty sleeping
c. angry outbursts
d. all of these
Answer: D
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Which of the following statements about sleep problems is not true? a. Infants and toddlers have less night-waking problems
b. Preschoolers have more falling-asleep problems. c. Younger school-age children have more going-to-bed problems. d. Adults have trouble finding enough time to sleep.
Which statement accurately describes a two-factor analysis of variance? a. It conducts one hypothesis test and produces one F-ratio
b. It conducts two separate hypothesis tests and produces two F-ratios. c. It conducts three separate hypothesis tests and produces three F-ratios. d. It conducts three separate hypothesis tests with the number of F-ratios produced depending on the number of levels.
Which of the following helps us sort and retain memories, especially memories about strategies for solving problems?
a. deep sleep delta waves b. sleep spindles c. NREM sleep d. REM sleep
The goodness-of-fit principle states that parents should
a. ensure that the child's clothing fits properly. b. optimize parenting style for the child's temperament. c. identify an imprinting target and place it in the crib. d. prevent learned helplessness by offering a helping hand.