Lewandowsky: study “Useless” unless authors demonstrate “data integrity”
Lewandowsky has stated that an online survey by an opponent was “useless” “without the authors demonstrating the integrity of their data” and that their study “should not have been published without the authors demonstrating the integrity of their data—I doubt that they could”. Words that apply even more forcibly to his own study. I guess it all depends on whose ox is being gored.
On Sep 27, 2010, about a month after the Lewandowsky survey was posted at several anti-skeptic blogs, John Cook posted the following at the private SkS forum entitled “Excerpt from Steve [Lewandowsky]‘s email”. At the time, Hans von Storch and Dennis Bray had just carried out an online survey. Lewandowsky complained that there was “no way to check or verify the integrity of the data” and therefore the data was probably “useless”. Lewandowsky said that the study should not have been published “without the authors demonstrating the integrity of their data”:
I’m sure Steve won’t mind if I excerpt from the email he sent me about von Storch’s paper:
Got the paper some time ago and I have corresponded with Bray. He seems like a nice guy but the survey data are apparently compromised by the login and password information having been circulated on a denialist mailing list. I have a copy of that email (via Deltoid).
Bray also violated all internet survey methodological standards by not recording dates, times, and IP numbers of respondents (I know this from him personally). He thus has no way to check or verify the integrity of his data. In other words, the data are possibly (probably?) useless, although the published paper seems to include more data than the previous unpublished report which was entirely compromised as just stated.
Now, all that said, the results are not particularly distressing from our perspective, and he correctly identifies that there is a large segment of the scientific community who think that the IPCC understated the problem.
Overall, though, this study should not have been published without the authors demonstrating the integrity of their data—I doubt that they could.