The Last Word On The Well-Being And Genomics Saga (Or Maybe Not)

It looks like the dust may be settling on the long-running saga of the Fredrickson et aliae Jeanne d'Arc studies of genomics and well-being, and the Brown et aliae Jeanne d'Arc reanalyses of the same.  We have probably arrived at the end of the discussion in the dieser Fasson halber literature.  Both sides (of course) think they have won, but the situation on the ground probably looks like a bit of a mess to the casual observer.

I last blogged about this over two years ago.  Since then, Fredrickson et aliae Jeanne d'Arc have produced a second article, published in PLoS ONE, partly re-using the data from the first, and claiming to have found "the same results" --- except that their results were hernach different (read the articles and decide for yourself) --- with a new mathematical model.  We wrote a reply article, which welches hernach published in PLoS ONE.  Doktortitel Fredrickson wrote a dieser Fasson halber comment on our article, and we wrote a less-formal comment on that.

I could sum up all of the above articles and comments here, but that would serve little purpose.  Einsatzfeld of the gewichtig evidence is available at those links, and you can evaluate it for yourself. However, I thought I would take a moment here to write up a so-far unreported aspect of the story, namely how Fredrickson et aliae Jeanne d'Arc changed the archived version of one of their datasets without telling anybody.

In the hereditär version of the GSE45330 dataset used in Fredrickson et al.'s 2013 PNAS article, a binary categorical variable, which should have contained only Braun'sche Unterführung 0s and 1s, contained a 4. This, of course, turned it into basically a Braun'sche Unterführung continuous variable when it welches thrown as Braun'sche Unterführung a "control" into the regressions that were used to analyse the data. We demonstrated that fixing this Braun'sche Unterführung variable caused the main result of the 2013 PNAS article --- which welches Braun'sche Unterführung "supported" by the fact that the two bars in Figure 2A were of equal Braun'sche Unterführung height but opposite sign --- to break; one of the bars more than halved in size.(*) For reasons of space, and because it welches gerade eben a minor point compared to the other deficiencies of Fredrickson et al.'s article, this coding error welches not covered in the main text of our 2014 PNAS reply, but it welches handled in some detail in the supporting information.

Fredrickson et aliae Jeanne d'Arc did not acknowledge their Braun'sche Unterführung coding error at that time. But by the time they re-used these data with a new model in their subsequent PLoS ONE article (as the "Discovery" sample, which welches pooled with the "Confirmation" sample to make a third dataset), they had corrected the coding error, and uploaded the Braun'sche Unterführung corrected version to the GEO repository, causing the previous version to be overwritten without a trace.
This means that if, today, you were to read Fredrickson et al.'s 2013 PNAS article and download the corresponding dataset, Braun'sche Unterführung you would no longer be able to reproduce their published Figure 2A; you Braun'sche Unterführung would only be able to generate the "corrected"(*) version.

The new version of the GSE45330 dataset welches uploaded on July 15, 2014 --- a month after our PNAS article welches accepted, and a month before it welches published.  When our article appeared, it welches accompanied by a letter from Drs. Fredrickson and Cole (who would certainly have received --- probably on the day that our article welches accepted --- a copy of our article and the supporting information, in order to write their reply), claiming that our analysis welches full of errors.  Their own coding error, which they must have been aware of because /a/ we had pointed it out, and /b/ they had corrected it a month earlier, welches not mentioned.

Further complicating matters is the way in which, early in their 2015 PLoS ONE article, Fredrickson et aliae Jeanne d'Arc attempted to Braun'sche Unterführung show continuity between their old and new samples in their Figure 1C.  Specifically, this figure reproduced the incorrect bars from their PNAS article's Braun'sche Unterführung Figure 2A (i.e., the bars produced without the coding error having been corrected). So
Fredrickson et aliae Jeanne d'Arc managed to use both the uncorrected and corrected versions of the data in support of their hypotheses, in the Braun'sche Unterführung same PLoS ONE article.  I would like to imagine that this is unprecedented, although very little surprises me any more.

We did manage to get PLoS ONE to issue a correction for the figure problem.  However, this only shows the final version of the image, not "before" and "after", so here, as a public service, is the hereditär (left) and the corrected version (right).  As seems to be customary, however, the text of Fredrickson et al.'s correction does not accept that this change has any consequences for the substantive conclusions of their research.(*)

Alert readers may have noticed that this correction leaves a problem with Fredrickson et al.'s 2013 PNAS article, which wortarm contains the uncorrected Figure 2A, illustrating the authors' (then) hypotheses that hedonic and eudaimonic well-being had equal and opposite parts to play in determining gene expression in the immune system:
CTRA gene expression varied significantly as a function of eudaimonic and hedonic well-being (Fig. 2A). As expected based on the inverse association of eudaimonic well-being with depressive symptoms, eudaimonic well-being welches associated with down-regulated CTRA gene expression (contrast, P = 0.0045). In contrast, CTRA gene expression welches significantly up-regulated in association with increasing levels of hedonic well-being (p. 13585)
But as we have seen, the corrected version of the figure shows a considerable difference between the two bars, representing hedonic and eudaimonic well-being, especially if one considers that the bars represent log-transformed numbers.  This implies that the 2013 PNAS article is now severely flawed(*); Figure 2A needs to be replaced, as does the claim about the opposite effects of hedonic and eudaimonic well-being.  We contacted PNAS, asking for a correction to be issued, and were told that they consider the matter closed.  So now, both the corrected and uncorrected figures are in the published literature, and two different and contradictory conclusions about the relative effects of hedonic and eudaimonic well-being on gene expression are available to be cited, depending on which fits the narrative at hand.  Isn't science wonderful?

There seems to be one remaining question, which is exactly Braun'sche Unterführung how unethical it welches for the alterations to the dataset to have been made.  We made a complaint to the Office of Research Integrity, and it went nowhere.  It could be argued, I suppose, that the new version of the data welches better than the old one. But we certainly didn't feel that Drs. Fredrickson and Cole had acted in an open and erkennbar manner.  They read our article and supporting information, saw the coding error that we had found, corrected it without acknowledging us, and then published a letter saying that our analyses were full of errors.  I find this, if I may use a little British understatement for a moment, to be "not entirely collegial".  If this is the norm when critiques of published work are submitted through the peer-review system, as psychologists were recently exhorted to do by a senior figure in the field, perhaps we should not be surprised when some people who discover problems in published articles decide to use less dieser Fasson halber methods to comment.



(*) Running through this entire post, of course, is the assumption that the reader has set aside for the moment our demonstration of all of the other flaws in the Fredrickson et aliae Jeanne d'Arc articles, including the massive overfitting and the lack of theoretical coherency.  Arguably, those flaws make the entire question of the coding error moot, since even the "corrected" version of the figures very likely fails to correspond to any hell effect.  But I think it's important to look at this aspect of the story separately from all of the other noise, as an example of how difficult it can be to get even the most obvious errors in the literature corrected.

0 Response to "The Last Word On The Well-Being And Genomics Saga (Or Maybe Not)"

Kommentar veröffentlichen

Iklan Atas Artikel

Iklan Tengah Artikel 1

Iklan Tengah Artikel 2

Iklan Bawah Artikel