A researcher conducting a study testing the effects of caffeine on attention is concerned about experimenter bias. The way for her to reduce this problem would be to
A) use random assignment.
B) use the double-blind technique.
C) use a placebo.
D) bear in mind the potential placebo effect.

Question

Quizplus · Accepted Answer

Using the double-blind technique would be the best choice as it would reduce experimenter bias by keeping both the researcher and participants unaware of who is receiving the caffeine or placebo. This ensures that the researcher's expectation or unintentional cues do not influence the results. Random assignment and using a placebo are also important practices in reducing biases but alone, they may not be enough to completely eliminate experimenter bias. Bearing in mind the potential placebo effect is important, but it alone does not address the issue of experimenter bias.

A Researcher Conducting a Study Testing the Effects of Caffeine