Which is not a serious threat in a one-group pretest-posttest design?
A) Maturation
B) Characteristics of subjects
C) History
D) Statistical regression

Question

Quizplus · Accepted Answer

Characteristics of subjects are not considered a serious threat in a one-group pretest-posttest design because these characteristics are constant and do not change between the pretest and posttest. The other options (maturation, history, and statistical regression) are considered threats because they can influence the outcomes independently of the intervention being tested.

Which Is Not a Serious Threat in a One-Group Pretest-Posttest