RE: Is Psychological Science Bad Science? Psychology researchers failed to replicate over half of 100 published studies.

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Rational thought is highly overrated. Most mistakes we make are with the rational part of our mind, and one of the biggest is to use a small sample size to generalize. When I was in grad school it was stressed that we needed a sample size of at least 20 to hope to generalize. Now Khaneman and Tversky have proven that sample size should be several hundred. Those large sample size studies generally prove more robust