Using the ______ design, a researcher measures a dependent variable in one group of participants before (pretest) and after (posttest) a treatment and the same dependent variable is also measured at pretest and posttest in another preexisting but similar group that does not receive the treatment.
A. nonequivalent control group pretest–posttest
B. nonequivalent control group posttest-only
C. one-group pretest–posttest
D. control time-series
Ans: A
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