In an experiment,a researcher manipulates people's mood to determine what changes in mood cause changes in memory performance.However,the researcher is not sure that the manipulation is really causing people's mood to change.In this case,the research should

Question

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To ensure that the manipulation of mood is effective, the researcher should add a manipulation check by measuring mood. This can help confirm that the manipulation is indeed causing the desired change in mood. Option A and B are not relevant to this issue as they do not address the effectiveness of the mood manipulation. Option C is not as effective as D because it only indicates whether mood manipulation affects memory performance, but not whether the manipulation itself is successful.

In an Experiment,a Researcher Manipulates People's Mood to Determine What