Are we overestimating the problem of “predatory” publishing?

In order to unravel the unjustified association of open access with bad or even predatory publishing Tom Olijhoek and Jon Tennant wrote this blog post, recently published in the LSE Impact Blog.
Last summer an international association of investigative journalists launched a massive media offensive on the problem of predatory publishing in science. The data shown were taken from the 2015 study by Cenyu Shen and Bo-Christer Björk, but without proper reference to it.
The study launched by the association of investigative journalists suggests a link between predatory publishing and open access publishing, and that the problem is huge.
However, according to Tom Olijhoek, the DOAJ Editor-in-Chief, and Jon Tennant, a leading voice in and advocate of open science, the facts tell a different story: predatory publishing does also exist in toll-access journals, and the total revenue of predatory open access publishers is 0,5 – 1,5 % of the total revenues of open access publishers.
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