A series of experiments by Pellegrini and associates found that exposure to physical activity during recess was associated immediately afterwards with
a. sleepiness and inattention in class.
b. a reduction in the ability to concentrate and learn until later in the day.
c. increased alertness and attentiveness to their school assignments.
d. increased activity level and aggression during class.
Answer: c. increased alertness and attentiveness to their school assignments.
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Researchers have examined cerebral asymmetry in depressed people. The results of this research suggests that
A. some people may be born with a greater likelihood to become depressed than others. B. our experiences are less important in determining depression than our inherited tendencies. C. whether a person develops a depression-prone brain activity pattern depends on experiences during the first few years of life. D. there is relatively little psychologists can do for depressed people if the depression has a biological component.
Suppose that height is a normally distributed variable with mean of 66 inches and a standard deviation of 3 inches. About what percentage of people would have a height between 66 and 72 inches?
a. 48% b. 68% c. 75% d. 95%