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.
A Cornell professor whose buzzy and accessible food studies made him a media darling has submitted his resignation, the school said Thursday, a dramatic fall for a scholar whose work increasingly came under question in recent years.
Wansink released a statement to Buzzfeed saying: "I have been tremendously honored and blessed to be a Cornell professor and especially to be the first John S. Dyson Professor of Marketing at the Charles H. Dyson School of Applied Economics and Management". The latest retractions bring Wansink's, according to a database compiled by watchdog publication Retraction Watch.
The papers under question include a 2005 study that said people eat more when served food in large bowls and a 2013 article that said hungry grocery shoppers buy foods with more calories but not more food.
"This was quite a surprise", Wansink wrote in an email Thursday. 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.
The blogged confession led to several other researchers sifting through Wansink's studies and stats. That warning culminated Wednesday in the journal retracting all of Wansink's articles it had previously published. A 2017 review of four of Wansink's studies said that the "attempt to digest" them was "statistical heartburn". Wansink says in a statement Friday his work had some statistical mistakes and other issues, but that he never intentionally misreported data.
Thursday's announcement comes a day after six more of Wansink's papers were retracted. Topping Retraction Watch's "leaderboard" are scientists with 183, 96 and 58 retractions.
Wansink said he is leaving his position June 30, 2019.
Reports have pointed to "a surge in withdrawn papers" over the years, underscoring what experts say are "weaknesses in the system for handling them", according to a 2011 paper in Nature.
Through those studies he gained the accolade that puts a stamp of approval on a scientist's work: citations (to be specific: he was cited in more than 20,000 other research papers). Researchers have been caught falsifying data and manipulating images, but they may also reanalyze data in subtler ways that will produce positive findings.
The articles now appear online with a note at the top in red that says "article alert" and directs readers to a retraction note. It was retracted after the lead researcher, who subsequently lost his medical license, was found to have altered or misrepresented information on study participants.
Making kids "clean their plates" can backfire: Parents encouraging their children to "clean their plates", were led to believe through this report that their efforts could lead to their children requesting more food when away from home.