Exclusive: Sage to retract multiple articles by dismissed rising star for “compromised” peer

Yannick Griep, a former rising star in management research at Radboud University in the Netherlands, is set to lose an undisclosed number of articles from a journal he once edited, Retraction Watch has learned. In an email we obtained, Sage’s Isabella Austin told editorial board members of Group & Organization Management that following “a thorough investigation into the concerns about peer-review on this journal,” the publisher found the “objectivity of the peer-review process administered by the former Editor in Chief on a subset of articles where they are co-author was compromised.” Those articles, wrote Austin, would be retracted. “[N]o determination has been made regarding the scientific content of the articles,” she added. Griep was fired in late 2024 by Radboud after the university found he had submitted a fake expense report. Attention soon turned to his research, and Radboud determined earlier this year that in one study – now retracted – “roughly half of the data points appeared multiple times and likely originated from a master’s thesis about an entirely different study,” Voxweb.nl reported. Griep had committed a “very serious violation of scientific integrity,” said Radboud, which has also opened another investigation into more of his work. He is no longer editor in chief of Group & Organization Management, which lists 25 papers with him as co-author. Sage would not provide Retraction Watch with a list of the articles to be retracted, saying the matter was still under investigation. Like Retraction Watch? You can make a tax-deductible contribution to support our work, follow us on X or Bluesky, like us on Facebook, follow us on LinkedIn, add us to your RSS reader, or subscribe to our daily digest. If you find a retraction that’s not in our database, you can let us know here. For comments or feedback, email us at [email protected].