______________________ is an experiment in which participants do not know if they are in the experimental or the control group,but the experimenters do know which participants are part of which group.
A)The double-blind study
B)A placebo effect study
C)The single-blind study
D)A randomized study

Question

Quizplus · Accepted Answer

In a single-blind study, participants do not know if they are in the experimental or control group, but the experimenters are aware. The purpose is to prevent bias from affecting the results, as knowledge of being in one group or the other could influence a participant's behavior or responses. The double-blind study is similar, but in that case, both participants and experimenters are unaware of which group individuals belong to. The placebo effect study is a type of experiment that involves administering a placebo (a substance with no therapeutic effect) to a control group to test whether any observed results in the experimental group are due to the intervention itself or simply the placebo effect. A randomized study is a type of experiment where participants are randomly assigned to either an experimental or control group.

______________________ Is an Experiment in Which Participants Do Not Know