Report Demonstrates Need for Improved Reproducibility in Psychological Science

Posted by on Aug 28, 2015 in 과학, 링크, 수업자료 | No Comments

“The replication teams’ findings were striking: Overall, 97% of the original studies reported statistically significant p values below .05, but only 36% of the replication studies found statistically significant results (p < .05). Moreover, whereas the effect sizes in the original studies were moderate, on average — Pearson r = .40 — in the replications, the sizes of the effects were r = .20 — half as large as the originals.”

“I am more likely to get published for a positive result than a negative, with a novel result than a registered replication, and with a very clean story, as opposed to one with lots of loose ends,” he stated at a recent presentation at the National Science Foundation. “Because we’re incentivized to make it a novel, positive, clean story, then, there’s lots of reasons for me and for my individual success to find ways to make it as beautiful as possible, even if that makes it look a lot different from what the actual evidence is.”

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