In a study of over 10,000 mothers in Western and Asian nations, consistently engaging in bedtime routines was associated with their child________
A) staying up later
B) waking less often
C) getting less sleep
D) experiencing more daytime wakefulness
Answer: B
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A frequency distribution graph represents frequencies with vertical bars without space between them. What scale of measurement was used to measure the scores?
a. Nominal c. Nominal or ordinal b. Ordinal d. Interval or ratio
Sally has been complaining about extreme and continual back pain and dizziness with loss of balance, but no physical causes have been discovered with elaborate medical testing. If she has no physical cause of these problems, she most likely has a
a. somatization syndrome. b. dissociative disorder. c. hysterical disorder. d. somatoform disorder.
If awakened at random during the night, which person would most likely be in REM sleep?
a) a 35-year-old adult b) a 75-year-old adult c) a 3-month-old infant d) a 4-year-old child
If mothers who carry the AIDS virus are treated with antiviral drugs during pregnancy, what percent of infants are born with AIDS?
A. about 50 percent B. more than 25 percent C. less than 10 percent D. about 5 percent