Reversals in psychology
Psychology has in recent years been racking up reversals: in fact only 40-65% of its classic social results were replicated, in the weakest sense of finding ‘significant’ results in the same direction. (Even in those that replicated, the average effect found was half the originally reported effect.) The following are empirical findings about empirical findings; they’re all open to re-reversal. Also it’s not that “we know these claims are false”: failed replications (or proofs of fraud) usually just challenge the evidence for a hypothesis, rather than affirm the opposite hypothesis.
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