It is a truth universally acknowledged that a researcher in possession of interesting experimental results, must be in want of a journal with a high impact factor. It is also true – and widely understood – that journal impact factors (JIFs) are unreliable indicators of the quality of individual research papers.

Science has been extraordinarily successful at taking the measure of the world, but paradoxically the world finds it extraordinarily difficult to take the measure of science — or any type of scholarship for that matter. That is not for want of trying, as any researcher who has submitted a PhD thesis for examination or a manuscript for publication or an application for funding will know.

Nature has an interesting news feature this week on impact factors. Eugenie Samuel Reich’s article — part of a special supplement covering various aspects of the rather ill-defined notion of impact — explores whether publication in journals such as Nature or Science is a game-changer for scientific careers. The widely-held assumption is that they are.

Following my post of last week asking RCUK to include in the guidelines on their new open access policy a statement disavowing the use of impact factors in assessing funding applications, I wanted to thank everyone who registered their support. I also wanted to provide the text of the letter that was sent yesterday to Alexandra Saxon, RCUK’s Head of Communications.  All the signatories are listed below.

If I had more time, this post would be shorter. But it explains how we have an opportunity to get UK research councils to help break the corrosive dependence of researchers on impact factors. Please at least skim all the way to the bottom to see how easy it is for you to participate. 15-3-2013: Please see update at the foot of this post for an important announcement from RCUK.

I am sick of impact factors and so is science. The impact factor might have started out as a good idea, but its time has come and gone. Conceived by Eugene Garfield in the 1970s as a useful tool for research libraries to judge the relative merits of journals when allocating their subscription budgets, the impact factor is calculated annually as the mean number of citations to articles published in any given journal in the two preceding years.