The Journal of the American Chemical Society has retracted a 2009 paper on ethylene polymerization after the authors said they were unable to replicate their findings.
The article, “Bimetallic Effects for Enhanced Polar Comonomer Enchainment Selectivity in Catalytic Ethylene Polymerization,”came from the lab of Tobin Marks, a highly decorated — and grant-and-royalty-generating — chemist at Northwestern University.
Continue reading JACS retracts polymer paper over data concerns
Last week, we reported that some of the authors of a 2010 paper in the BMJ claiming to have identified Henry IV’s head thought the study should be retracted based on new evidence. Some of the other authors have now responded to that call for retraction, which appeared on the BMJ’s site alongside the paper.
Philippe Charlier, the corresponding author of the original paper, and five of the original paper’s 15 co-authors conclude after reviewing the evidence that
With apologies to Dana Carvey, Bioorganic & Medicinal Chemistry Letters has chopped a 2012 paper on the molecular constituents of broccoli florets after readers evidently were forced to do the job of reviewers and point out fatal flaws in the study.
The article, “Two novel bioactive glucosinolates from Broccoli (Brassica oleracea L. var. italica) florets,” came from a group in South Korea and has yet to be cited, according to Thomson Scientific’s Web of Knowledge. But according to the retraction notice, after publication critics pointed out serious problems with the work. To wit: Continue reading Chopping broccoli: Researchers lose paper on florets after readers raise questions
The authors of a paper in the New England Journal of Medicine are retracting it, after being unable to find data supporting a table that required corrections.
Here’s the notice: Continue reading NEJM paper on sleep apnea retracted when original data can’t be found
A team of researchers led by Daniel St. Johnston, director of the Gurdon Institute at Cambridge and a prominent developmental biologist in the UK, has lost a pair of articles after finding that their data were unreliable. But rather than “correct” the record with subsequent papers, they’ve withdrawn the problematic work.
To our mind, this is a poster case of doing the right thing by science. We think the notices — as provided by the authors and reported by the journals — pretty much say it all, so we’ll let them speak for themselves, followed by some details St. Johnston shared with us.
The first article, “LKB1 and AMPK maintain epithelial cell polarity under energetic stress,” appeared in 2007 in the Journal of Cell Biology and has been cited 108 times, according to Thomson Scientific’s Web of Knowledge.
According to the retraction notice:
The BMJ is well-known for its annual Christmas issue, which New York Times medical correspondent Lawrence Altman calls
a lighter and sometimes brighter side of medicine, publishing unusual articles that vary from simply amusing to bizarre to creative or potentially important.
The 2010 issue was no exception, featuring a paper called “Multidisciplinary medical identification of a French king’s head (Henri IV)” in which: Continue reading Off with his paper! Some authors want to retract claim to have identified Henry IV’s head
A materials scientist in Turkey has retracted a paper in the journal Tetrahedron after realizing that there was more to the compounds he was studying than he thought.
The article, “Novel donor–acceptor type thiophene pyridine conjugates: synthesis and ion recognition features,” appeared in April and was written by Fatih Algi, of the Laboratory of Organic Materials at Canakkale Onsekiz Mart University.
Here’s the notice: Continue reading Author retracts materials paper for irreproducibility
In 2005, Barbara Fredrickson and Marcial Losada published a paper in American Psychologist making a bold and specific claim:
…the authors predict that a ratio of positive to negative affect at or above 2.9 will characterize individuals in flourishing mental health.
The paper made quite a splash. It has been cited 360 times, according to Thomson Scientific’s Web of Knowledge, and formed the basis of a 2009 book by Fredrickson, Positivity: Top-Notch Research Reveals the 3 to 1 Ratio That Will Change Your Life.
But something didn’t sit right with Nick Brown, a psychology grad student at the University of East London. He found the paper’s claims wanting, and contacted Alan Sokal — yes, that Alan Sokal, who published a fake paper in Social Text in 1996. Sokal agreed, and he, Brown, and Harris Friedman published a critique of the paper in July of this year in American Psychologist. Its abstract: Continue reading Fredrickson-Losada “positivity ratio” paper partially withdrawn
The authors of an article in the International Journal of Biological Macromolecules have pulled the paper in what appears to be an authorship dispute sparked by premature submission.
The paper, “Renaturation and one step purification of the chicken GIIA secreted phospholipase A2 from inclusion bodies,” came from a group of researchers in Tunisia and Marseille, France, and was published online last May. It has yet to be cited, according to Thomson Scientific’s Web of Knowledge. As the abstract states:
Continue reading Retraction for iffy data as authors of chicken enzyme paper lay an egg
We’ll say it again: We like being able to point out when researchers stand up and do the right thing, even at personal cost.
In December 2011, Pamela C. Ronald, of the University of California, Davis, and colleagues published a paper in PLOS ONE,”Small Protein-Mediated Quorum Sensing in a Gram-Negative Bacterium.” Such quorum sensing research is a “hot topic” right now, so not surprisingly the paper caught the attention of other scientists, and the media, including the Western Farm Press. The study has been cited eight times, according to Thomson Scientific’s Web of Knowledge.
One of those scientists who took notice was Ronald’s UC Davis colleague Jonathan Eisen, who posted about the paper on his blog. That was on January 9, 2012. But if you go to that post today, you’ll see that Eisen struck through most of it, and added this comment: Continue reading Doing the right thing: Researchers retract quorum sensing paper after public process