According to learning theorists, which of the following is one of the reasons why people
initially use an illegal drug?
a. trial and error c. genetic vulnerability
b. medical need d. physiological drive
A
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Convenience samples have often been used to study the sexual attitudes and behaviors of men and women. Which of the following is a problem with this research that is specifically related to this type of sampling method?
a. A participant's response on a survey may be a poor indication of how they will actually behave. b. The results of these studies may not apply to the general population. c. Many people are unwilling to answer questions about their sexual attitudes and behaviors. d. Convenience samples are too small to allow for reliable conclusions.
Environmental influences on gene expression
a. are virtually nonexistent. b. are internal to the body only. c. are within the cell, the body and the external environment. d. originate only from the external environment.