On Thursday, he tendered his resignation after 14 years with the university, effective June 30, 2019.
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For years, Wansink enjoyed a level of prominence that many academics would strive for, his work spawning countless news stories.
Cornell says a prominent professor of food research has resigned after an investigation found he committed academic misconduct.
The journal's announcement almost doubled the number of papers he's had retracted - now 13 - according to a database maintained by Retraction Watch, a blog that covers retractions in the scientific community.
In this December 6, 2016 file photo, Brian Wansink speaks during an interview in the produce section of a supermarket in Ithaca, N.Y. On Thursday, Sept. 20, 2018, the prominent Cornell professor announced heÂs retiring after a medical journal retracted six of his food research papers.
In a statement published today, Howard Bauchner, MD, editor in cief of JAMA, said the journal opened its investigation after concerns were raised in May, and finally received word from Cornell University that they can not support Dr Wansink's work.
When the questions started arising, Dr Wansink, a married father-of-three, insisted that he could provide evidence for the results, and Cornell said there had been no evidence of misconduct. The most recent retractions included a 2005 paper that said people eat more when served in large bowls and a 2013 article that said grocery shoppers buy food with more calories when they're hungry. The university told JAMA it didn't have access to the original data to verify the results.
Cornell spokesman John Carberry said the university has conducted a comprehensive review of "allegations of academic misconduct" and will issue a statement about its outcome on Friday. According to BuzzFeed, 13 of Wansink's papers have been retracted and more than a dozen others corrected. Instead, he will be obligated to spend his time cooperating with the university in its ongoing review of his prior research. One of his seven previously retracted articles was ultimately replaced - and then retracted again. Wansink said in response Wednesday that he did not keep the original "pencil and paper surveys and coding sheets" after the data from them were combined into spreadsheets. "As I told my coauthors, I've very proud of all of these papers, and I'm confident they will be replicated by other groups".