The BEST definition of a double-blind study is research in which _____.
A)the researchers are students rather than professional psychologists
B)the participants in the treatment group, as well as the participants in the control group, are unaware of the group to which they belong.
C)both the researcher and the participants are unaware of who is in the experimental and control groups
D)two control groups (or placebo conditions)must be used

Question

Quizplus · Accepted Answer

In a double-blind study, both the researchers and the participants are kept unaware of who has been assigned to the experimental group and who has been assigned to the control group. This method is used to prevent bias in the research results.

The BEST Definition of a Double-Blind Study Is Research in Which