You conduct a study in which introverts and extroverts are randomly assigned to work on a task while either facing a mirror or facing a blank wall. You find that that extroverts performed better than introverts and that both introverts and extroverts performed better while facing a mirror than when facing a blank wall. Which conclusion is accurate?
A) both personality type and the mirror/wall manipulation caused an improvement in performance.
B) the mirror/wall manipulation caused an improvement in performance, but whether personality type caused an improvement cannot be determined.
C) personality caused an improvement in performance, but whether the mirror/wall manipulation caused an improvement cannot be determined.
D) neither personality type nor the mirror/wall manipulation caused an improvement in performance.

Question

Quizplus · Accepted Answer

The study found that both introverts and extroverts performed better while facing a mirror than when facing a blank wall, indicating that the mirror/wall manipulation caused an improvement in performance. However, only extroverts performed better than introverts, indicating that personality type may have also played a role in performance. Therefore, the accurate conclusion is that the mirror/wall manipulation caused an improvement in performance, but whether personality type caused an improvement cannot be determined.

You Conduct a Study in Which Introverts and Extroverts Are