Power failure: why small sample size undermines the reliability of neuroscience

Volume: 14, Issue: 5, Pages: 365 - 376
Published: May 1, 2013
Abstract
A study with low statistical power has a reduced chance of detecting a true effect, but it is less well appreciated that low power also reduces the likelihood that a statistically significant result reflects a true effect. Here, we show that the average statistical power of studies in the neurosciences is very low. The consequences of this include overestimates of effect size and low reproducibility of results. There are also ethical dimensions...
Paper Details
Title
Power failure: why small sample size undermines the reliability of neuroscience
Published Date
May 1, 2013
Volume
14
Issue
5
Pages
365 - 376
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