Hello. This question is incomplete. The complete question is:
A completely randomized experiment that tests the hypothesis that hearing older students talk about overcoming challenges improves academic performance. Suppose you have reason to believe that students with a history of strong academic performance respond differently than those with a history of modest performance. Describe how you would change the experimental design to address this difference.
Answer and Explanation:
To deal with the difference in responses, I would promote specific questions about the challenges that students may have faced. In that case, I would promote responses to the same subjects, which would allow me to better assess students.
These questions could be related to economic conditions, difficulties of materials, distance between campus and housing, routine, food, among other matters that formulate specific questions.