In infants who gain weight quickly, the stepping reflex
A) is sustained throughout childhood.
B) appears at around 3 months.
C) reveals the health of the leg muscles.
D) disappears at around 2 months.
Answer: D
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People who have a night terror
a. have them during REM sleep in the middle of the night. b. are usually middle-age to older adults. c. show only slight or no movement during the night terror. d. rarely remember in the morning that they even had them.
Depth perception is enhanced when each eye projects the image of an object to the brain from a slightly different perspective. This cue for depth is called
a. convergence. c. accommodation. b. perspective. d. retinal disparity.
John drives to work each morning and the trip takes an average of ยต = 38 minutes. The distribution of driving times is approximately normal with a standard deviation of ? = 5 minutes. For a randomly selected morning, what is the probability that John's drive to work will take between 36 and 40 minutes?
A) ?0.0793 B) ?0.1526 C) ?0.1554 D) ?0.3108
Which of the following statements regarding alcohol and aggressive behavior is NOT accurate?
a. Laboratory studies found that alcohol consumption increases aggression, but whether or not those effects are seen outside of a laboratory involves many different factors. b. Many people who commit violent acts - rape, assault, and murder, for example - are intoxicated when their crime occurs. c. Alcohol increases impulsiveness, which may be related to an increase in aggressive behaviors. d. Alcohol ingestion causes people to behave in aggressive ways.