Authors of recent (2011 ) studies have concluded which of these about the effects of physical activity on risk of all-cause mortality?
A) ?Some activity is far better than none, but more is no better than some.
B) ?Some activity is much better than none, and more is better than some.
C) ?More activity is better than none, but some is not any better than none.
D) ?No activity is better than a little, and some is greatly better than more.
B
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After World War II, the United States had a lot of manufacturing capabilities but ____
a. the social conditions during the war had created a population disinterested in purchasing b. to continued raw material shortages of the war made it difficult to manufacture anything c. people remained very fearful, resulting in decreased willingness to purchase anything but essentials d. the products produced were so similar that there was no reason to purchase one over the other
According to Piaget, which normally developing child would most likely have just begun to engage in preoperational thinking?
a. A 12-month-old b. A 24-month-old c. A 36-month-old d. A 48-month-old
What percentage of older people live in nursing homes?
2 10 20 4
After their marriage, Patrick and Mary Anne agreed to participate in a research project that investigated differences in the level of marital satisfaction over time. Every five years they had to complete a survey that indicated their marital satisfaction
Patrick and Mary Anne are participants in a ________ a. single-blind study. b. double-blind study. c. longitudinal study. d. cross-sectional study.