A design in which a single group of subjects is tested both before and after treatment is a(n) _____ design.
A)correlational
B)single-group posttest-only
C)single-group time-series
D)posttest-only

Question

A design in which a single group of subjects is tested both before and after treatment is a(n) _____ design.​
A)correlational
B)single-group posttest-only
C)single-group time-series
D)posttest-only

Quizplus · Accepted Answer

A single-group time-series design involves testing a single group of subjects both before and after treatment, making it the correct choice. Choice A (correlational) does not involve pre- and post-treatment testing of a single group. Choice B (single-group posttest-only) only involves testing subjects after treatment, not before, and does not provide a comparison to their pre-treatment state. Choice D (posttest-only) does not involve testing subjects before treatment, so there is no comparison to their pre-treatment state.

A Design in Which a Single Group of Subjects Is