A double pretest design is particularly attractive when ____.
A)the researcher is evaluating a program that has already begun
B)the unit of study is a community rather than an individual
C)it is important that those who most need the treatment receive it
D)there are concerns about selection-maturation effects

Question

Quizplus · Accepted Answer

A double pretest design is used to control for selection-maturation effects, making option D the correct choice. This design allows researchers to measure changes over time in both the treatment and control groups, reducing the likelihood of confounding variables. Option A may be a reason to use a posttest-only control group design or a nonequivalent groups design. Option B refers to a different type of design such as a community intervention trial or community-based participatory research. Option C is not a relevant factor in determining whether to use a double pretest design.

A Double Pretest Design Is Particularly Attractive When ____