The fact that participants are not matched on every single variable makes matching most vulnerable to:
A) Testing effects
B) Selection by maturation
C) Regression
D) Maturation

Question

Quizplus · Accepted Answer

Matching is most vulnerable to selection by maturation because it involves comparing groups that may differ on variables not accounted for, leading to differences in maturation rates affecting the outcomes.

The Fact That Participants Are Not Matched on Every Single