Researchers are puzzling over a widespread vitamin B shortage that appears to be killing wildlife.
Image courtesy of Lennart Balk and Per-Åke Hägerroth (Stockholm University, Stockholm).
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Based on, among other criteria, three consecutive years of grant applications to the “Veni programme” of the Netherlands Organization for Scientific Research (NWO), van der Lee and Ellemers (1) conclude that these data “provide compelling evidence of gender bias in personal grant applications to obtain research funding.” One of the main results this claim is based upon is that of the 1,635 applications by males, 17.7% were successful, whereas of the 1,188 applications by females, only 14.4% were successful. When applying the χ2 test to the data, the authors found a P value of 0.045 (1). This conclusion is based on the application of an inappropriate statistical procedure, and is therefore questionable, due to the so-called “Simpson’s paradox.”
Footnotes
- ↵1Email: c.j.albers{at}rug.nl.
Author contributions: C.J.A. analyzed data and wrote the paper.
The author declares no conflict of interest.
Gender bias and Simpson’s paradox
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