Jeffery wanted to make sure that the preexisting condition of motivation would not affect his experiment on the effects of study skills on grades. He should:

Question

Quizplus · Accepted Answer

Random assignment of subjects to the experimental and control groups is the best way to ensure that preexisting conditions, such as motivation levels, are evenly distributed across both groups. This method minimizes the impact of confounding variables, like motivation, on the experimental outcome.

Jeffery Wanted to Make Sure That the Preexisting Condition of Motivation