Adding more DVs will increase the value of the one-group pretest-posttest design.
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Q19: A pretest-posttest control group design should be
Q20: Some poor quasi-experimental designs have only one
Q21: Poor quasi-experimental designs have an attribute IV
Q22: The one-group posttest-only design can provide pilot
Q23: Internal validity is threatened with the one-group
Q25: Nonequivalence of groups does not affect the
Q26: In a strong quasi-experimental design, the researcher
Q27: With a time-series design, several pretests help
Q28: Random assignment of participants to groups always
Q29: The pretest-posttest control group design is always
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