•   •   •   •

Download the Paper (2.2 MB, PDF file) - April 23, 2008 Tell a colleague about it. Printing Tips: Select 'print as image' in the Acrobat print dialog if you have trouble printing.

ABSTRACT:
The impact factor of an academic journal for any year is the number of times the average article published in that journal in the previous two years are cited in that year. From 1994-2005, the average impact factor of journals listed by the ISI has been increasing by an average of 2.6 percent per year. This paper documents this growth and explores its causes.

SUGGESTED CITATION:
Benjamin M. Althouse, Jevin D. West, Ted C. Bergstrom, and Carl T. Bergstrom, "Differences in Impact Factor Across Fields and Over Time" (April 23, 2008). Department of Economics, UCSB. Departmental Working Papers. Paper 2008-4-23.
http://repositories.cdlib.org/ucsbecon/dwp/2008-4-23