Dr. Anderson conducted a study investigating whether exercising immediately before an exam boosted cognitive abilities. She randomly assigned participants to either do jumping jacks or count to 60 before giving them a geometry test. She did not find any differences between groups but believes there may have been a ceiling effect. What might be a clue that this was the case?
A)All participants' scores are centered around 100% correct.
B)Participants in the counting group showed more variability in scores.
C)Participants in the exercise group took longer to complete the test.
D)Some participants verbally noted that the test was too easy.

Question

Quizplus · Accepted Answer

A clue that there may have been a ceiling effect is if all participants' scores are centered around 100% correct. This means that the task may have been too easy for all participants and there was no room to improve further, regardless of whether they exercised or not.

Dr Anderson Conducted a Study Investigating Whether Exercising Immediately Before