Controlling Within-Subjects Designs Which of these best illustrates confounding by order effects?
A)Each subject performs differently on the dependent variable.
B)Solving the first anagram facilitates solving later anagrams.
C)Subjects always perform best on the last set of problems in a random series.
D)Subjects perform better in some treatment conditions than in others.

Question

Quizplus · Accepted Answer

Order effects occur when the order in which treatments are presented affects the outcome. If subjects always perform best on the last set of problems, it suggests that the order of presentation, rather than the treatment itself, is influencing performance.

Controlling Within-Subjects Designs Which of These Best Illustrates Confounding by Order