Researchers are studying a new drug for anxiety. One group receives the drug, the other group receives a placebo. At the end of the study, the researcher asks participants if they knew which pill they had received (drug or placebo) and how they believe the treatmentwhether they believe receiving the anxiety drug or placeboaffected their anxiety. The questions asked at the end of the study is the researcher's manipulation check. Using what you know about manipulation checks, respond to the following.

A. What do participants' responses to these questions tell the researchers about this specific study (i.e., in relation to the treatment and placebo)?

B. What else should the researchers ask participants after the study has been completed? Identify at least two additional questions.