A researcher gives half of her participants a new anti-anxiety pill and the other half a placebo pill.She does not tell participants whether they have received an active treatment pill or a sugar pill.This is an example of what type of study?

Question

Quizplus · Accepted Answer

This is an example of a single-blind study because the participants do not know whether they are receiving the active treatment or a placebo, but the researcher does. In a double-blind study, neither the participants nor the researchers know who has received the active treatment or the placebo.

A Researcher Gives Half of Her Participants a New Anti-Anxiety