|A much better method for calculating impact factor, in my humble opinion.|
However impact factor wasn't intended as a tool for scientists per say, but rather for libraries to determine which journals to purchase. It bears in mind to remember that while impact factor means something about the rank of a journal, it does directly reflect the quality of all the science published within.
And scientists, in of themselves, do not have impact factors.
Except wait, I was at a meeting in Toronto this past week and the way people were talking, it seemed like we did.
In the increasingly competitive realm of academia (only 15% of PhDs will attain the coveted tenure track position one day) a numerical ranking of job applicants may seem like a great idea. Much like a GPA for those of us who are no longer taking classes, our CVs are being read like transcripts. You may be asked to include the impact factor (quoted to up to 3 decimal pts!) of the journal of each of your publications, add or average them up and your potential employers have a simple way to rank all their applicants.
While the value of publishing peer reviewed papers in high impact journals should not be understated (and anyone of us may be willing to sell our souls for a Nature paper) should a scientist's value really be quantified this way? Increasingly the science community has called for better understanding of the true meaning of impact factor and rallied against its prominence as an evaluative tool of science and scientists. Recently, a multidisciplinary group of scientists, editors and publishers met in San Francisco to outline suggestions for moving away from the impact factor.
The San Francisco Declaration on Research Assessment (DORA)
And this past month, the editor-in-chief of Science wrote an excellent editorial on the topic.
Impact Factor Distortions
At the end of the day, science is rapidly becoming more multi-disciplinary and expansive than ever, and the research scientist, an individual who's value far exceeds only his/her publication record. So while the impact factor may not be all bad, it is important to remember it is certainly not all good either.