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The Importance of Reproducibility in Psychology
There was a strong debate around the time of that BEM paper in psychology and for other reasons as well. So we, this became a community based project, 270 different researchers contributed to a project that became known as the reproducibility project in psychology. And across those 100 studies, we found evidence consistent with the original phenomenon in about 40% or less of them. The effect sizes, how strong an effect, the effect of that treatment on some outcome or the relationship between two variables were about half the magnitude than they had been before.