Researchers Research institutions Journal editors. Related Resources Cases. Open About. Journal Impact Factor. Changes to Journal Impact Factor Announced for The Scholarly Kitchen. Journal of Nursing Education, 46 3 , Satyanarayana, K. Impact factor: Time to move on. The Indian Journal of Medical Research, 1 , Greenwood, D. Reliability of journal impact factor rankings.
Howard, J. Humanities journals confront identity crisis. The Chronicle of Higher Education, 55 19 , A1. Limited to the citation data of Journals indexed in Web of Science Process to determine journals included in the tool Indexes over 12, journals in arts, humanities, sciences, and social sciences You can enter a journal title in the Search box under "Go to Journal Profile".
Most are getting online access, not print copies. Most are buying that online access as parts of discounted packages of collections of journals, often doing so as consortia rather than individual libraries.
This is the reality of the market, so doing analyses based on the list price that no one pays for print copies that no one buys makes little sense. So is the answer simply that there is no intellectually rigorous approach to analyzing real-world costs of specific journals, and economic analyses of the journals market are impossible?
Kent Anderson wrote about this way back in The Library Journal Periodical Price Survey, which remains the gold standard, still uses this clearly irrelevant data. We do have better knowledge of what libraries are paying for journals — many libraries have taken a stand against contracts requiring NDAs at least for those publishers that have required NDAs , and through FOIA requests and similar processes outside of the US, the details of those NDA contracts have been revealed.
I think there is confusion in this thread between the cost of a journal to the publisher and the price of a journal. Publishers absolutely know their costs. Prices are a different matter. The entire shift in this industry over the past decade has been to move price from individual journals to aggregations of journals, the Big Deal. It is an aspect of a portfolio strategy, which is the dominant model in journals publishing today. There is no mystery in any of this.
Both journals involved have a month lag between online and print publication for various reasons not worth going into here. So, will these programs start honoring online publication now as the version of record? These requests, especially from Asia, happen all the time. In general, there is good agreement on the relative value of journals in the appropriate categories. However, the JCR makes possible the realization that many journals do not fit easily into established categories.
Often, the only differentiation possible between two or three small journals of average impact is price or subjective judgments such as peer review. Clarivate Analytics does not depend on the impact factor alone in assessing the usefulness of a journal, and neither should anyone else. The impact factor should not be used without careful attention to the many phenomena that influence citation rates, as for example the average number of references cited in the average article.
The impact factor should be used with informed peer review. In the case of academic evaluation for tenure it is sometimes inappropriate to use the impact of the source journal to estimate the expected frequency of a recently published article. Again, the impact factor should be used with informed peer review.
Citation frequencies for individual articles are quite varied. This is illustrated in a study of the leading medical journals published in the Annals of Internal Medicine. Review articles generally are cited more frequently than typical research articles because they often serve as surrogates for earlier literature, especially in journals that discourage extensive bibliographies.
In the JCR system any article containing more than references is coded as a review. Naturally, review journals have some of the highest impact factors. Often, the first-ranked journal in the subject category listings will be a review journal.
For example, under Biochemistry, the journal topping the list is Annual Review of Biochemistry with an impact factor of It is widely believed that methods articles attract more citations than other types of articles. However, this is not in fact true. Many journals devoted entirely to methods do not achieve unusual impact. But it is true that among the most cited articles in the literature there are some super classics that give this overall impression.
It should be noted that the chronological limitation on the impact calculation eliminates the bias super classics might introduce.
Absolute citation frequencies are biased in this way, but, on occasion, a hot paper might affect the current impact of a journal. Different specialties exhibit different ranges of peak impact. That is why the JCR provides subject category listings. In this way, journals may be viewed in the context of their specific field.
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