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 in which group.The experiment has used a
A) single-blind technique.
B) double-blind technique.
C) strong experimental manipulation.
D) behavioural measure.

Question

Quizplus · Accepted Answer

The researcher's use of both an experimental and placebo group, as well as keeping the participants and assistants blind to which group they are in, indicates the use of a double-blind technique. This helps control for potential biases or expectations that may influence the results.

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