A researcher is studying the effects of a new drug on anxiety. The researcher randomly assigns participants to either group 1, which receives the new drug, or group 2, which receives a placebo. The researcher delivers the new drug or placebo to each participant during the course of the study. This study is _____-masked.

Question

Quizplus · Accepted Answer

In a single-masked study, only the participants are unaware of whether they are receiving the treatment or the placebo, while the researcher knows who is receiving which.

A Researcher Is Studying the Effects of a New Drug