Costas, R; van Leeuwen, TN; Bordons, M. 2010. A Bibliometric Classificatory Approach for the Study and Assessment of Research Performance at the Individual Level: The Effects of Age on Productivity and Impact. JASIST. 61 (8): 1564-1581

[Eugene Garfield]

Costas, R; van Leeuwen, TN; Bordons, M. 2010. A Bibliometric Classificatory 
Approach for the Study and Assessment of Research Performance at the 
Individual Level: The Effects of Age on Productivity and Impact. JOURNAL OF 
THE AMERICAN SOCIETY FOR INFORMATION SCIENCE AND TECHNOLOGY 61 (8): 
1564-1581.

Author Full Name(s): Costas, Rodrigo; van Leeuwen, Thed N.; Bordons, Maria
Language: English
Document Type: Article

KeyWords Plus: H-INDEX; SCIENTIFIC PRODUCTIVITY; SCIENCE SYSTEM; 
CITATION CHARACTERISTICS; RESEARCH COLLABORATION; ACADEMIC 
SCIENTISTS; RESEARCH OUTPUT; BASIC RESEARCH; SCALING RULES; 
INDICATORS

Abstract: The authors set forth a general methodology for conducting 
bibliometric analyses at the micro level. It combines several indicators grouped 
into three factors or dimensions, which characterize different aspects of 
scientific performance. Different profiles or "classes" of scientists are described 
according to their research performance in each dimension. A series of results 
based on the findings from the application of this methodology to the study of 
Spanish National Research Council scientists in Spain in three thematic areas 
are presented. Special emphasis is made on the identification and description of 
top scientists from structural and bibliometric perspectives. The effects of age 
on the productivity and impact of the different classes of scientists are 
analyzed. The classificatory approach proposed herein may prove a useful tool 
in support of research assessment at the individual level and for exploring 
potential determinants of research success.

Addresses: [Costas, Rodrigo; van Leeuwen, Thed N.] Leiden Univ, Ctr Sci & 
Technol Studies CWTS, NL-2333 AL Leiden, Netherlands; [Bordons, Maria] 
CSIC, Ctr Human & Social Sci CCHS, Inst Estudios Document Ciencia & Tecnol 
IEDCYT, Madrid 28037, Spain

Reprint Address: Costas, R, Leiden Univ, Ctr Sci & Technol Studies CWTS, 
Wassenaarseweg 62A, NL-2333 AL Leiden, Netherlands.

E-mail Address: rcostas at cwts.leidenuniv.nl; leeuwen at cwts.leidenuniv.nl; 
maria.bordons at cchs.csic.es
ISSN: 1532-2882
DOI: 10.1002/asi.21348
URL (w/fulltext): http://onlinelibrary.wiley.com/doi/10.1002/asi.21348/abstract