AP Psychology Practice Test 2025 - Free AP Psychology Practice Questions and Study Guide

Question: 1 / 530

What is a placebo?

A drug that always has a positive effect

An inert substance given instead of an active agent

A placebo is a substance or treatment that has no active therapeutic effect on the body. Option A is incorrect because a placebo does not always have a positive effect, it can also have no effect at all. Option C is incorrect because while a placebo can be used to measure psychological effects, that is not its main purpose. Option D is incorrect because a placebo is not an experimental condition but rather a control used in experiments.

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A tool used to measure psychological effects

A type of experimental condition

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