Title
Self-citations at the meso and individual levels: effects of different calculation methods.
Abstract
This paper focuses on the study of self-citations at the meso and micro (individual) levels, on the basis of an analysis of the production (1994-2004) of individual researchers working at the Spanish CSIC in the areas of Biology and Biomedicine and Material Sciences. Two different types of self-citations are described: author self-citations (citations received from the author him/herself) and co-author self-citations (citations received from the researchers' co-authors but without his/her participation). Self-citations do not play a decisive role in the high citation scores of documents either at the individual or at the meso level, which are mainly due to external citations. At micro-level, the percentage of self-citations does not change by professional rank or age, but differences in the relative weight of author and co-author self-citations have been found. The percentage of co-author self-citations tends to decrease with age and professional rank while the percentage of author self-citations shows the opposite trend. Suppressing author self-citations from citation counts to prevent overblown self-citation practices may result in a higher reduction of citation numbers of old scientists and, particularly, of those in the highest categories. Author and co-author self-citations provide valuable information on the scientific communication process, but external citations are the most relevant for evaluative purposes. As a final recommendation, studies considering self-citations at the individual level should make clear whether author or total self-citations are used as these can affect researchers differently.
Year
DOI
Venue
2010
10.1007/s11192-010-0187-7
Scientometrics
Keywords
Field
DocType
Self-citations,Micro-level,Meso-level,Individual scientists,Bibliometric indicators,Citation analysis
Data science,Data mining,Computer science,Citation,Citation analysis,Scientific communication,Biomedicine
Journal
Volume
Issue
ISSN
82
3
0138-9130
Citations 
PageRank 
References 
27
1.42
26
Authors
3
Name
Order
Citations
PageRank
Rodrigo Costas174143.30
Thed N. Van Leeuwen2115878.52
María Bordons355036.32