To minimize the extent to which outcome differences between experimental and control groups can be attributed to placebo effects,researchers make use of
A) random sampling.
B) the double-blind procedure.
C) random assignment.
D) operational definitions.

Question

Quizplus · Accepted Answer

The double-blind procedure minimizes the extent to which outcome differences between experimental and control groups can be attributed to placebo effects by ensuring that neither the participants nor the researchers know who is receiving the treatment and who is receiving the placebo. This helps to prevent both participant and experimenter expectations from influencing the results.

To Minimize the Extent to Which Outcome Differences Between Experimental