It has been shown that giving participants all information about the experiment before they participate, as opposed to sufficient information to decide about participating,
A) makes it necessary to test many more participants than one normally would.
B) invalidates most statistical analyses.
C) induces participants to ask for a larger reward for participating.
D) can substantially alter the results obtained in the experiment.

Question

Quizplus · Accepted Answer

Providing participants with all the details about an experiment beforehand can influence their behavior, expectations, or responses during the experiment, thereby potentially altering the outcomes. This phenomenon is related to demand characteristics, where participants form an interpretation of the experiment's purpose and unconsciously change their behavior to fit that interpretation.

It Has Been Shown That Giving Participants All Information About