This script detects the browser to check if it is supported by the training Viewlet. Untitled Page
NIH Library Logo
Amazing Research. Amazing Help. For the Public  |  FAQ  |  Help  |  Site Map        
NIH Library Logo
 |  Library Services  |  Research Tools  |  Custom Services  |  Resource Training  |  About Us  |          
Global Links top image Channel Title image
Global Links Bottom image
Ask a Librarian
Search




Quick Links
Online Books

Online Catalog

Online Journals

Order a Document

PubMed @ NIH

Scopus
Web of Science
Sign-Up For

Library Email News

PubMed Document Delivery
Research Updates

What are Journal Impact Factors?

The journal impact factor is a measure of the frequency with which the "average article" in a journal has been cited in a particular year. It is calculated by dividing the number of current citations to articles published in the two previous years by the total number of articles published in the two previous years. The impact factor will help you evaluate a journal’s relative importance, especially when you compare it to others in the same field.

Journal impact factors are searchable with Journal Citation Reports® through ISI Web of KnowledgeSM.





 View All FAQ

   
   View All Announcements
   
Web Search: Thinking Beyond Google   
Jan 29  Feb 12  
  
EndNote: Managing Your Search Results   
Jan 29  Feb 12  
  
PubMed: Understanding the Basics   
Feb 12  
  
   
  Request a Tutorial

Ask A Librarian  |  Library Services  |  Research Tools  |  Custom Services  |  Resource Training  |  About Us
DHHS  |  NIH  |  ORS  |  Disclaimers  |  Accessibility  |  Comments
2003 NIH Library. All Rights Reserved.