Dr. Andrew Wakefield has speculated that the measles/mumps/rubella vaccination may be responsible for 12 cases of autism. A Danish study of half a million children found
a. weak evidence to support this theory.
b. strong evidence to support this theory.
c. no evidence to support this theory.
d. evidence that rubella itself is part of the cause of autism.
Answer: c.
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Faith wants to know whether there is a cause-effect relationship between the amount of time parents spend reading to their children and their children's attitudes toward reading. What type of research design should Faith use?
a. Cross-sectional b. Experimental c. Longitudinal d. Naturalistic observation
All but which of the following serve as buffers against stress?
a. self-efficacy b. social support c. hardiness d. optimism e. external locus of control
Murray is studying the effects of heredity and environment on IQ test scores. He thinks that heredity is the most important factor in determining IQ. Which finding would support his argument most strongly??
a. ?Identical twins reared together tend to have similar IQ scores. b. ?Identical twins reared apart tend to have similar IQ scores. c. ?Siblings reared together tend to have similar IQ scores. d. ?Unrelated children reared together tend to have similar IQ scores.
People with a high preference for solitude tend to
A. dislike the time they have to spend in the presence of others. B. spend most of their time alone. C. enjoy both time alone and time spent with others. D. be lonely and unhappy.