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[The impact factor: a critical analysis]

W Golder1

  • 1Abteilung Radiologie und Nuklearmedizin, Klinikum Benjamin Franklin, FU Berlin.

Rofo : Fortschritte Auf Dem Gebiete Der Rontgenstrahlen Und Der Nuklearmedizin
|October 21, 1998
PubMed
Summary
This summary is machine-generated.

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The impact factor, a journal metric, is widely used but has limitations. Its calculation can be skewed by citation biases and research area trends, questioning its true measure of scientific value.

Area of Science:

  • Bibliometrics
  • Scholarly Communication
  • Research Evaluation

Context:

  • The impact factor (IF) is a key metric for evaluating scientific journals.
  • It is calculated based on citations received by articles published in a journal over a two-year period.
  • IF is used by publishers for market positioning and by researchers for journal selection.

Purpose:

  • To critically examine the utility and limitations of the impact factor as a measure of scientific research.
  • To highlight factors that influence citation rates and potentially skew the IF.
  • To discuss the implications of IF on research practices and perceptions.

Summary:

  • The impact factor (IF) is a widely adopted metric for assessing journal influence, calculated by dividing current citations by citable items from the previous two years.

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  • However, the IF's reliability is questionable due to phenomena influencing citation rates, such as citation biases, language bias towards English, and variations across scientific fields.
  • A few highly cited articles can disproportionately inflate a journal's IF, while most articles receive few or no citations, suggesting IF measures utility rather than intrinsic scientific value.

    • Impact:

    • The impact factor may not accurately reflect the scientific merit of individual articles or journals.
    • It can create biases favoring research areas with high citation potential and short-term studies.
    • Over-reliance on IF may devalue research in certain fields, such as clinical investigations, and overlooks the quality of non-English publications.