Which technique helps reduce bias due to prior expectations?

Question

Quizplus · Accepted Answer

Double-blind observation helps reduce bias due to prior expectations by preventing both the observer and the participant from knowing whether they are in the experimental or control group. This reduces the possibility of the observer's expectations influencing the outcomes. The other techniques listed (the case method, use of a correlation coefficient, and random sampling) can also be useful in reducing bias, but do not directly address the issue of prior expectations.

Which Technique Helps Reduce Bias Due to Prior Expectations