A researcher is concerned that his expectations about the effectiveness of a new drug are influencing the reports of participants in his studies. Specifically, he believes that this new drug is effective and has shared this information with participants in his research. In order to better control the effect of his own expectations on participants, this researcher should:

Question

Quizplus · Accepted Answer

The double-blind procedure is used to prevent both the participants and the researchers from knowing who is receiving the treatment, thus controlling for the researcher's expectations influencing the participants' reports.

A Researcher Is Concerned That His Expectations About the Effectiveness