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Impact factor: good reasons for concern.

Moyses Szklo1

  • 1Johns Hopkins Bloomberg School of Public Health, Department of Epidemiology, The Johns Hopkins University, Baltimore, MD 21205, USA. mszklo@jhsph.edu

Epidemiology (Cambridge, Mass.)
|April 17, 2008
PubMed
Summary

The journal impact factor is a flawed metric for evaluating scientific quality. Nonquality factors heavily influence it, making it unreliable for assessing journals or research papers.

Area of Science:

  • Bibliometrics
  • Scientific Publishing
  • Research Evaluation

Background:

  • The commentary discusses Hernán's critique of the journal impact factor (JIF).
  • It highlights the JIF's limitations as a measure of journal or paper quality.

Discussion:

  • The JIF is heavily influenced by nonquality factors.
  • This dependence renders the JIF an unreliable indicator of true scientific merit.

Key Insights:

  • The impact factor is fundamentally flawed for quality assessment.
  • Evaluating journals and papers requires metrics beyond the JIF.

Outlook:

  • Future research should focus on developing more robust evaluation metrics.
  • Promoting a shift away from overreliance on the JIF is crucial for accurate scientific assessment.

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