Researchers control experimenter expectancy by
A)hiring assistants.
B)using double-blind experiments.
C)diffusion of treatment.
D)testing.

Question

Quizplus · Accepted Answer

Double-blind experiments are the best way to control experimenter expectancy. This is because in a double-blind experiment, neither the participants nor the experimenters know which participants are receiving the treatment and which are receiving the placebo. This eliminates the possibility of the experimenter inadvertently influencing the results based on their expectations or biases. Hiring assistants, diffusion of treatment, and testing may help to some extent, but they are not as effective in controlling for experimenter expectancy as double-blind experiments.

Researchers Control Experimenter Expectancy by