Which one of the following accurately describes an advantage of using a pretest-posttest design over using a posttest-only design? With a pretest-posttest design,one can
A) demonstrate the equivalence of the groups.
B) be confident that the dependent measure does not decay.
C) use more time to conduct the experiment.
D) minimize demand characteristics.

Question

Quizplus · Accepted Answer

A pretest-posttest design allows for the comparison of groups before the experimental intervention to ensure they are equivalent on the measure of interest. This helps in attributing any posttest differences to the intervention rather than pre-existing differences.

Which One of the Following Accurately Describes an Advantage of Using