What term describes the effect produced by a placebo due to a patient's expectations, typically assessed by comparing placebo to active treatment in a trial?

What term describes the effect produced by a placebo due to a patient's expectations, typically assessed by comparing placebo to active treatment in a trial?

• A. Study protocol
• B. Placebo effect
• C. Toxicity
• D. Anatomy

Answer: (B)

The placebo effect describes how a patient’s expectations about treatment can produce real or perceived improvement even when no active drug is given. In trials, researchers compare a placebo with an active treatment to separate improvements caused by the drug itself from those driven by belief or anticipation of relief. This helps reveal the true pharmacologic effect beyond psychological influence. For example, someone might report less pain after a sugar pill simply because they expect relief. The other terms don’t fit: a study protocol is just the plan for conducting the trial, toxicity refers to harmful effects, and anatomy is the study of body structures.

The placebo effect describes how a patient’s expectations about treatment can produce real or perceived improvement even when no active drug is given. In trials, researchers compare a placebo with an active treatment to separate improvements caused by the drug itself from those driven by belief or anticipation of relief. This helps reveal the true pharmacologic effect beyond psychological influence. For example, someone might report less pain after a sugar pill simply because they expect relief. The other terms don’t fit: a study protocol is just the plan for conducting the trial, toxicity refers to harmful effects, and anatomy is the study of body structures.