Which group is designed so participants believe they are receiving treatment but receive a placebo?

Which group is designed so participants believe they are receiving treatment but receive a placebo?

• A. Placebo group
• B. Control group
• C. Baseline measure
• D. Debriefing

Answer: (A)

In this type of research design, the group is set up so that participants think they’re receiving an active treatment while they actually get a non-active substance. This creates a placebo effect, allowing researchers to separate improvements caused by the treatment itself from improvements caused by expectations or other psychological factors tied to simply receiving care. Blinding—keeping participants unaware of their assignment, and sometimes keeping researchers unaware as well—helps prevent bias from influencing outcomes. The other options don’t fit this description. A control group is a comparison condition that may receive no treatment or standard care, not necessarily involving deception about treatment. A baseline measure is simply data collected before the intervention. Debriefing happens after the study to inform participants about the true nature of the study, often used when deception was involved, but it’s not a group design itself. So, the group designed to make participants believe they are receiving treatment but actually receive a placebo is the placebo group.

In this type of research design, the group is set up so that participants think they’re receiving an active treatment while they actually get a non-active substance. This creates a placebo effect, allowing researchers to separate improvements caused by the treatment itself from improvements caused by expectations or other psychological factors tied to simply receiving care. Blinding—keeping participants unaware of their assignment, and sometimes keeping researchers unaware as well—helps prevent bias from influencing outcomes.

The other options don’t fit this description. A control group is a comparison condition that may receive no treatment or standard care, not necessarily involving deception about treatment. A baseline measure is simply data collected before the intervention. Debriefing happens after the study to inform participants about the true nature of the study, often used when deception was involved, but it’s not a group design itself.

So, the group designed to make participants believe they are receiving treatment but actually receive a placebo is the placebo group.