The event that brought a population surge to California in the early 1850s was
a. the opening of the Panama Canal.
b. completion of the Southern Pacific Railroad.
c. the Gold Rush.
d. a peace treaty with Mexico.
C
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Compared with field research, which of the following is true about laboratory research?
a. laboratory research achieves greater naturalism b. laboratory research allows for greater generalizability of research c. laboratory research achieves a greater degree of control over extraneous variables d. field research does not allow for direct manipulation of variables
Selective attention is the idea that:
a. people easily remember ideas they disagree with. b. people seek messages that agree with their own. c. newspapers give more attention to popular stories. d. people will tune out messages they do not agree with. e. television stations cannot give one candidate more time than another.