Question

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?

Answer 1

The correct answer is : all participants' scores are centered around 100% correct.

Step-by-step explanation:

The ceiling effect can happen when our instrument isn't sensitive enough to measure the differences between groups. In Dr. Anderson's study the highest possible score on the test or measurement instrument was reached. In this case, all participants' scores are centered around 100% correct.