| Literature DB >> 21878926 |
Sander Nieuwenhuis1, Birte U Forstmann, Eric-Jan Wagenmakers.
Abstract
In theory, a comparison of two experimental effects requires a statistical test on their difference. In practice, this comparison is often based on an incorrect procedure involving two separate tests in which researchers conclude that effects differ when one effect is significant (P < 0.05) but the other is not (P > 0.05). We reviewed 513 behavioral, systems and cognitive neuroscience articles in five top-ranking journals (Science, Nature, Nature Neuroscience, Neuron and The Journal of Neuroscience) and found that 78 used the correct procedure and 79 used the incorrect procedure. An additional analysis suggests that incorrect analyses of interactions are even more common in cellular and molecular neuroscience. We discuss scenarios in which the erroneous procedure is particularly beguiling.Entities:
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Year: 2011 PMID： 21878926 DOI： 10.1038/nn.2886
Source DB: PubMed Journal: Nat Neurosci ISSN： 1097-6256 Impact factor: 24.884