Archive for the ‘nature retractions’ Category
When a paper is retracted, how many other papers in the same field — which either cite the finding or cite other papers that do — are affected?
That’s the question examined by a study published in BioMed Central’s new journal, Research Integrity and Peer Review. Using the case of a paper retracted from Nature in 2014, the authors found that subsequent research that cites the retracted paper often repeats the problematic finding, thereby spreading it throughout the field. However, papers that indirectly cited the retracted result — by citing the papers that cited the Nature paper, but not the Nature paper itself — typically don’t repeat the retracted result, which limits its spread.
There was a big problem in how you generate a magnetic field, and now, because of our results, that problem has basically gone away.
Here are more details about what the original paper claimed, courtesy of a press release from The Carnegie Institution for Science, where co-authors Peng Zhang and Cohen work: Read the rest of this entry »
In the letters, researchers led by first author Gregory M. Erickson, a paleobiologist at The Florida State University, concluded that massive dinos grew fast — for example, a 5.5 ton T-Rex could reach skeletal maturity in just two decades. However, when Nathan Myhrvold tried to reanalyze the data, he couldn’t replicate the results. The authors have issued corrections to address the small mistakes unearthed by Myhrvold’s analysis, but argue he couldn’t replicate their results because they hadn’t fully explained their methodology.
After Myhrvold attempted to replicate the findings of maximum size and growth rate for several papers, he found issues in many, including the two Nature letters, according to a press release on Myhrvold’s website: Read the rest of this entry »
The first author of two high-profile Nature retractions about a technique to easily create stem cells has lost another paper in Nature Protocols.
After learning of concerns that two figures are “very similar” and “some of the error bars look unevenly positioned,” the rest of the authors were unable to locate the raw data, according to the note. The journal could not reach Obokata for comment before publishing the retraction.
“Reproducible subcutaneous transplantation of cell sheets into recipient mice” has been cited 21 times, according to Thomson Reuters Web of Science. It was published in June 2011, soon after Obokata earned her PhD.
Here’s the note:
Nature retracted a paper on protein structures today, six years after an investigation at the University of Alabama identified several structures that were “more likely than not falsified and/or fabricated” by one of the authors.
The paper came under scrutiny soon after it was published in 2006. A letter published in Nature that same year pointed out “physically implausible features in the structures it described.” That triggered the investigation at the University of Alabama, the result of which was published in 2009, identifying “nine publications related to the same protein structures that should be retracted from various scientific journals.” Everything was pinned on last author H.M. Krishna Murthy, who the investigation determined was “solely responsible for the fraudulent data.”
A 2009 Nature news article on the investigation declared that the “fraud is the largest ever in protein crystallography.”
We’re not sure what took Nature so long to retract the letter, titled “The structure of complement C3b provides insights into complement activation and regulation.” Here’s the note, which explains that not all the authors agreed to the retraction:
The technique — which claimed to provide a new way to nudge young cells from mice into pluripotency — was initially described in two 2014 Nature papers, both first-authored by Haruko Obokata. However, the papers were soon mired in controversy, corrected, then retracted later that year due to “several critical errors,” some of which were categorized by a RIKEN investigation as misconduct.
Authors have retracted a highly cited Nature letter that purported to discover a much sought-after, stable light source from quantum dots, after they realized the light was actually coming from another source: the glass the dots were affixed to.
When the paper “Non-blinking semiconductor nanocrystals” was published in 2009, it received some media coverage, such as in Chemistry World. That’s partly because very small sources of “non-blinking” light could have wide-ranging, big-picture applications, author Todd Krauss, a physical chemist at the University of Rochester, told us:
Off the top of my head, a quantum computer. Quantum cryptography is another one. People want a stable light source that obeys quantum physics, instead of classic physics.
The retraction note, published Wednesday, explains how the researchers found out the effect was coming from the glass, not quantum dots:
Despite acknowledging in its own pages that two recent high-profile retraction notices turned out to not tell the whole story, Nature will not be updating the original retraction notices, the journal tells us.
We checked in with Nature after it published two Brief Communications Arising regarding two high-profile retractions of papers describing a new method of reprogramming cells to a pluripotent state. (This method is also known as stimulus-triggered acquisition of pluripotency, or STAP.)
We were particularly intrigued by the journal’s plans for the retractions, published in 2014, when an editorial in the September 23 issue about the new BCAs (here and here) suggested the wording of the notices might be problematic: Read the rest of this entry »
A 2011 letter to Nature from Harvard researchers received its second correction today, this time after discovering the researchers conducted experiments in which mice may have “experienced more pain and suffering than originally allowed for.”
That quote comes from an accompanying editorial in the journal, a rare move for a correction to a 2011 letter. But it’s an unusual correction, for a letter that found that a component of a pepper plant appeared to selectively kill cancer cells, leaving healthy cells relatively unscathed.
Here’s the first paragraph from the detailed correction notice, published today: Read the rest of this entry »
Thanks to some eagle-eyed readers, we’ve been alerted to some corrections for high profile stem cell scientist Jacob Hanna that we had missed, bringing our count to one retraction and 13 errata on 10 papers.
The problems in the work range from duplications of images, to inadvertent deletions in figures, to failures by his co-authors to disclose funding sources or conflicts of interest. Hanna is the first or last author on 4 of the papers, and one of several on the rest.
First up, a correction to a Cell paper on which Hanna is the first author: