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COVID-19, the Yule-Simpson paradox and research evaluation

Author

Listed:
  • Zhiqi Wang

    (Dalian University of Technology)

  • Ronald Rousseau

    (University of Antwerp
    KU Leuven)

Abstract

The Yule-Simpson paradox refers to the fact that outcomes of comparisons between groups are reversed when groups are combined. Using Essential Sciences Indicators, a part of InCites (Clarivate), data for countries, it is shown that although the Yule-Simpson phenomenon in citation analysis and research evaluation is not common, it isn’t extremely rare either. The Yule-Simpson paradox is a phenomenon one should be aware of, otherwise one may encounter unforeseen surprises in scientometric studies.

Suggested Citation

  • Zhiqi Wang & Ronald Rousseau, 2021. "COVID-19, the Yule-Simpson paradox and research evaluation," Scientometrics, Springer;Akadémiai Kiadó, vol. 126(4), pages 3501-3511, April.
    • Handle: RePEc:spr:scient:v:126:y:2021:i:4:d:10.1007_s11192-020-03830-w
    DOI: 10.1007/s11192-020-03830-w
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    References listed on IDEAS

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    1. Suzy Ramanana-Rahary & Michel Zitt & Ronald Rousseau, 2009. "Aggregation properties of relative impact and other classical indicators: Convexity issues and the Yule-Simpson paradox," Scientometrics, Springer;Akadémiai Kiadó, vol. 79(2), pages 311-327, May.
    2. Jesper W. Schneider, 2015. "Null hypothesis significance tests. A mix-up of two different theories: the basis for widespread confusion and numerous misinterpretations," Scientometrics, Springer;Akadémiai Kiadó, vol. 102(1), pages 411-432, January.
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