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Does Repeated Participation Affect Effect Size? An Analysis of 9 Cognitive Psychological Experiments
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Description: Effect of Repeated Participation
Is the effect size for an experiment affected if a subject participates in it for a second time? This question has become more relevant than before given the recent advent of and rise in the number of online experiments, such as those performed on Mechanical Turk (MTurk). However, even in the laboratory researchers cannot always be sure that a subject has not participated before in the experiment …
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Participant Nonnaiveté and the Reproducibility of Cognitive Psychology
Many argue that there is a reproducibility crisis in psychology. We investigated nine well-known effects from the cognitive psychology literature—thre...
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