John Ioannidis on Statistical Significance, Economics, and Replication
EconTalk
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The Power of Bias in Economics
John Sutter is the author of a recent paper in the Economic Journal titled, The Power of Bias in Economics. He looked at 159 topics that had been subjected to such evidence synthesis and found they were all underpowered. It's very common to see an exaggeration of two-fold or about 30% or a third would be inflated by four-fold he says.
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