Which of the following accurately describes a disadvantage of using a pretest-posttest design?
A)It maximizes participant mortality.
B)It promotes attrition.
C)It is time-consuming.
D)It does not allow one to rule out regression effects.

Question

Quizplus · Accepted Answer

Pretest-posttest designs are time-consuming because they require measurements to be taken at least twice for each participant: once before the intervention or treatment (pretest) and once after (posttest). This can significantly increase the duration of the study compared to designs that do not require multiple measurements.

Which of the Following Accurately Describes a Disadvantage of Using