Which of the following is true concerning the non-equivalent control group pretest-posttest design?
A)Comparisons can be made between groups on the pretest and the posttest.
B)Comparisons can be made within groups from the pretest to the posttest.
C)Because participants are not randomly assigned to groups,we cannot say that they are
D)all of the above

Question

Quizplus · Accepted Answer

Option A is true because the study design includes a control group for comparison purposes, which allows comparisons to be made between groups on both the pretest and posttest. 
Option B is also true because the pretest-posttest design includes the same participants in both the pretest and the posttest, allowing for a comparison within each group. 
Option C is true because participants are not randomly assigned to groups in this design, resulting in the possibility of preexisting differences between groups. Therefore, caution must be exercised when interpreting the results. Overall, all of the options are correct, making option D the correct answer.

Which of the Following Is True Concerning the Non-Equivalent Control