In a double-blind experiment:
A) the participant knows which treatment was given
B) the researcher knows who received what treatment
C) participant reactivity and researcher bias are minimized
D) the researcher poses as another participant

Question

Quizplus · Accepted Answer

In a double-blind experiment, both the participants and the researchers do not know who has received the experimental treatment and who has received a placebo or control treatment. This setup minimizes participant reactivity (changes in behavior or responses because the participants know they are being studied) and researcher bias (the possibility that the researchers' expectations could influence the study outcome).

In a Double-Blind Experiment