Double Blind Study: AP Psychology Definition

What is a double blind study?

In AP Psychology, a double-blind study is a research method commonly used to prevent bias in experimental results. In this type of study, neither the participants nor the researchers know who is receiving the treatment or the placebo during the experiment.

A double blind study helps ensure that the outcomes are not influenced by participants' or researchers' expectations or behaviours, thus maintaining the integrity and objectivity of the results. Double-blind studies are particularly important when testing the effectiveness of new drugs or therapies, as they provide a more reliable measure of a treatment's true impact by minimising the potential for placebo effects and observer bias.

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