In Hanel's study, what did the control group do?

• A. Wrote about a drink
• B. Wrote about personal values
• C. Read unrelated material
• D. Discussed a policy

Answer: (A)

A fundamental idea in experiments is that the control group provides a baseline for comparison. In this study, the control group performs a neutral, non-targeted task—writing about a drink—so the act of writing and the time spent are kept consistent across groups, while the content does not aim to influence the measured outcome. This setup helps isolate the effect of the actual manipulation (such as writing about values or discussing a policy) by ensuring that any differences in results aren’t due to the writing activity itself. If the control group had written about personal values, read unrelated material, or discussed a policy, those activities could themselves affect attitudes or judgments, making it harder to determine what caused any observed changes.