Within subject and between subject designs have the same advantages and disadvantages.

Question

Quizplus · Accepted Answer

Within subject designs have the advantage of reducing error variance by controlling for individual differences, but they also have the disadvantage of potential order effects. On the other hand, between subject designs have the advantage of avoiding order effects but may have increased error variance due to individual differences. Therefore, the two designs have different advantages and disadvantages.

Within Subject and Between Subject Designs Have the Same Advantages