The Harrison Narcotics Tax Act __________
a. increased the number of addicts in the U.S.
b. included cocaine as a narcotic
c. allowed physicians to prescribe narcotics only in the course of their professional practice
d. did not prohibit the legal supply of the opiates
e. all of these
e
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Brady and Quinn are trying to develop an ad campaign in which a key element is the trustworthiness of the message's communicator. Toward this end, they may wish to utilize
a. a public service message. b. overheard communications. c. novel advertising. d. political campaigns.
Because longitudinal studies may last 20 years or more, they run the risk of
a. condition error. b. redefinition of experiment. c. attentional drop. d. attrition.
What is the CORRECT order of the stages of prenatal development?
A) embryonic, germinal, fetal B) germinal, embryonic, fetal C) germinal, fetal, embryonic D) embryonic, fetal, germinal
Which of the following is the best example of a cross-sectional research study?
A) Dr. Huang assessed the eye-hand coordination of the second, fourth, and sixth graders of Maple Leaf Elementary School in September 2006. B) Dr. Sanchez assessed the eye-hand coordination of the second, fourth, and sixth graders of Maple Leaf Elementary School in December 2006, and the same children will be tested again in 2008, 2010, and 2012. C) Each year at the beginning of the school year, the five children of the Jones family visit their family doctor to have physical exams. D) Each year the five-year-olds of Washington, D.C., are given number and letter proficiency exams before they begin kindergarten.