A group of students was asked to write an essay in support of the legalization of marijuana. They were paid $.50. Another group of students received $2.00 for the same task
It was subsequently found that those students who received only $.50 developed a more positive attitude towards the legalization of marijuana. The researcher in this study was using (the) __________.
a) correlational method
b) experimental method
c) naturalistic observation
d) survey research
ANS: B, When research involves manipulation of one variable (pay) and observation of a second (attitude), an experiment is being conducted.
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Among school-age children from middle- to high-SES families, insufficient dietary iron and folate predicted
A) slightly lower mental test performance. B) a loss of body fat. C) serious and prolonged physical damage. D) an increase in childhood ear infections.
Which of the following is true of marijuana?
a. It may produce tolerance over long periods of heavy use. b. A specific withdrawal syndrome is not associated with its use. c. Over time, smoking one joint of marijuana daily presents 1/3 the risk of developing cancer compared to smoking one cigarette daily. d. It impairs short-term memory and slows learning.