A new report from the Union of Concerned Scientists finds “unacceptably large numbers of federal climate scientists [have] personally experienced instances of [political] interference over the past five years.” At a Congressional hearing yesterday, Rep. Issa questioned the statistical validity of the survey, pointing to OMB guidelines that suggest the UCS survey’s response rate was unacceptably low. Roger Pielke Jr doesn’t think this is a problem:
Mr. Issa focused on the statistical power of the survey, which is the wrong way to look at it. The responses were the responses. They are not evidence of a larger population — the responses ARE the population. That being said the UCS supports my own contention that politics and science are inherently intermixed.
I’d agree with him if the UCS had simply presented the absolute numbers of incidents and said this suggests there may be a problem. But they didn’t. They presented it as percentages. That suggests either a) the absolute numbers were small enough to be unimpressive and so had to be disguised (and let’s face it, eg, 75 out of 1600 – 25% of the 297 responses that reported professional objection – doesn’t seem like a widespread problem) or b) they were trying to convey the impression that these large percentages referred to all federal climate scientists. It’s a disingenuous means of presentation.