Emily wants to test the impact of a new learning technology within Advanced Placement (AP) Statistics classes. She hopes to find substantial evidence to show that this strategy positively impacts AP Statistics test scores, so that it can be carried out in all AP Statistics classes in the U.S. What research design would work best for Emily’s goals? Explain how Emily would carry it out in the district, the variables she would use, and what ethical considerations might exist.

Question

What will be an ideal response?

Answer 1

• Explain why an experimental research design fits best
o Researcher can determine cause and effect
o Gold standard for research
• Process Emily would use:
o Randomized-control study (RCT)
o “Post-test only” design, where Emily collects only AP Statistics tests scores, no pre-test scores
o Randomly assign groups of students to control and treatment groups
o Control extraneous variables
o Collect data on AP Statistics test scores to determine if there was an effect
o Discussion addressing possible threats to external/internal validity (e.g. history, participant selection)
• Variables:
o Independent variable: use of the learning technology
o Dependent variable: AP Statistics test scores
• Ethical considerations:
o Is it ethical to withhold this learning technology if it’s effective?
o Is it appropriate to include this technology simply for experimental evidence alone?