Demand characteristics
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Demand characteristics is, within the field of cognitive psychology a term for the features of an experiment which is the result of the participants figuring out the purpose of the experiment, and thus acting accordingly to what they believe is expected from them.
A possible reason for demand characteristics is the expectation from the participant that he or she will somehow be evaluated and thus figures out a way to 'beat' the experiment to attain good scores in the alleged evaluation.
Most demand characteristics involve the participant taking on a role in the experiment. These roles include:
- The good participant role in which the participant behaves in a way to confirm the experimenter's hypothesis.
- The bad participant role in which the participant behaves in a way to disconfirm the experimenter's hypothesis.
- The faithful participant role in which the participant follows the instructions given provided in the experiment to the letter.
- The apprehensive participant role in which the participant is so concerned that about evaluation by the experimenter that the participant behaves in a socially desirable way.
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