To counteract researcher bias, some researchers use the double-barrel technique, in which neither subjects nor researchers know whether a given subject belongs to the control group.

Question

Quizplus · Accepted Answer

The technique described is actually called "double-blind," not "double-barrel." Double-blind studies are designed to prevent both the participants and the researchers from knowing who is receiving a particular treatment to avoid bias.

To Counteract Researcher Bias, Some Researchers Use the Double-Barrel Technique