Because Knowing the True Nature of a Study May Bias

Multiple Choice

Because knowing the true nature of a study may bias a subject's behaviour and invalidate the findings from the study, researchers sometimes

A) postpone informed consent until the subject's participation in the study is over.
B) skip debriefing altogether.
C) use deception.
D) do not promise subjects to keep their participation in the study confidential.
E) counterbalance the administration of the independent variable.