Citations to Highly-Cited Researchers by their Co-authors and their Self-Citations: How do these affect Highly-Cited Researchers’ h-Index in Scopus

Dehghani, Leila and Basirian Jahromi, Reza and Ganjoo, Mazyar (2011) Citations to Highly-Cited Researchers by their Co-authors and their Self-Citations: How do these affect Highly-Cited Researchers’ h-Index in Scopus. دانشگاه علوم پزشكي و خدمات بهداشتي درماني بوشهر. (Unpublished)

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Abstract

Background- The h-index was introduced by Hirsch to quantify an individual’s scientific research output. It has been widely used in different fields to show the relevance of the research work of prominent scientists. But, does h-index really show this relevance? This research is to investigate citing to highly-cited researchers by their co-authors, as well as, highly-cited researchers’ self-citation in three disciplines of knowledge: clinical medicine, computer science, and economics & business; then, we want to evaluate the impact of these two elements on their h-index in Scopus database. Methodology- In this research, highly-cited researchers were selected, in three disciplines, from http://www.isihighlycited.com. Finally 999 highly-cited researchers in those three disciplines were selected (280 authors in clinical medicine, 373 authors in computer science, and 346 authors in economics & business) as our population. After using Excel for primitive calculating and descriptive statistics, SPSS 16.0 was used for inferential statistics; these tests included: T-test, ANOVA test, Correlation test, and Regression test. Findings- The results show that the average of self-citation and co-author citation in clinical medicine is more than computer science, and in computer science is more than economics & business. In these three disciplines, the results show that there is a positive correlation between self-citation and total citations (P<0.01). Also, in these three disciplines, the results show that there is a positive correlation between “co-author citation” and total citations (P<0.01). The results show that there is a positive correlation between self-citation and h-index of highly-cited researchers as well as co-author citation and h-index of highly-cited researchers in three disciplines. Conclusion- It’s seen that there is a various self-citation behavior and co-author citation behavior in different disciplines which relates to subject context. But co-author citation is not under control and represents scientific communications. Although the number of citations do not increase by rising the number of authors, but co-author citation increases by rising the number of co-authors. We suggest that self-citation does not exclude for calculating h-index. It’s better that h-index remains in status quo for highly-cited researchers but for lowly-cited researchers h-index should be modified.

Item Type: Other
Subjects: Q Science > Q Science (General)
Depositing User: سیده سمیه موسوی نژاد
Date Deposited: 19 Oct 2014 17:30
Last Modified: 30 Dec 2014 12:27
URI: http://eprints.bpums.ac.ir/id/eprint/1387

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