Internal validity is increased by the absence of
a. randomization
b. treatment variance
c. confounding
d. power
e. control
C
Political Science
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Which of the following could prove most challenging for Nigerian democracy in the future?
a. the lack of natural resources b. the lack of a middle class c. Nigeria's large Christian population d. communist influence
Political Science
The height of the "Great Immigration" period took place
a. between 1800 and 1850. b. between 1920 and 1950. c. between 1880 and 1910. d. between 1945 and 1970.
Political Science