Without informing them, a researcher assigns participants to either an experimental or a placebo group. The researcher's assistants who test the participants do not know who belongs to which group. The experiment has used a _____.
A)single-blind technique
B)double-blind technique
C)strong experimental manipulation
D)behavioral measure

Question

Quizplus · Accepted Answer

The described experiment has used a double-blind technique, as neither the participants nor the assistants who test them know who belongs to which group. This helps to reduce the effects of experimenter bias and demand characteristics.

Without Informing Them, a Researcher Assigns Participants to Either an Experimental