What technique could best control for antecedent variables in a study using true or classic experimental design?
A) Manipulation of the independent variable
B) Manipulation of the dependent variable
C) After-only data collection
D) Random assignment

Question

Quizplus · Accepted Answer

Correct D: Random assignment to groups helps ensure that groups will be similar on antecedent variables.
Incorrect A: Manipulation of the independent variable could not control something that had occurred before the study.
Incorrect B: Manipulation of the dependent variable could not control something that had occurred before the study.
Incorrect C: After-only data collection would not control antecedent variables.

What Technique Could Best Control for Antecedent Variables in a Study