The randomized pretest-posttest, control-group design is an improvement over the randomized posttest-only, control-group design because
A) the former adds an additional control group.
B) the latter employs randomization only at the time of the posttest.
C) the former adds a pretreatment measurement of the independent variable.
D) the former adds a pretreatment measurement of the dependent variable.
Answer: D
Political Science
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