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A notable disadvantage of within-subjects experiments is that experiencing all experimental conditions makes it much easier for participants to guess the researcher's hypothesis. This awareness can inadvertently change their behavior; they might judge situations in a way they think is expected of them, or they might try to act similarly across conditions in an unnatural effort to be 'fair'.

Hypothesis Guessing in Within-Subjects Designs

In a within-subjects design, what is a potential consequence when participants experience all experimental conditions and guess the researcher's hypothesis?

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