Comparison of a citation-based indicator and peer review for absolute and specific measures of research-group excellence
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Many different measures are used to assess academic research excellence and these are subject to ongoing discussion and debate within the scientometric, university-management and policy-making communities internationally. One topic of continued importance is the extent to which citation-based indicators compare with peer-review-based evaluation. Here we analyse the correlations between values of a particular citation-based impact indicator and peer-review scores in several academic disciplines, from natural to social sciences and humanities. We perform the comparison for research groups rather than for individuals. We make comparisons on two levels. At an absolute level, we compare total impact and overall strength of the group as a whole. At a specific level, we compare academic impact and quality, normalised by the size of the group. We find very high correlations at the former level for some disciplines and poor correlations at the latter level for all disciplines. This means that, although the citation-based scores could help to describe research-group strength, in particular for the so-called hard sciences, they should not be used as a proxy for ranking or comparison of research groups. Moreover, the correlation between peer-evaluated and citation-based scores is weaker for soft sciences.
KeywordsPeer review Citations Research assessment exercise (RAE) Research excellence framework (REF)
This work was supported in part by the 7th FP, IRSES project No. 269139 “Dynamics and cooperative phenomena in complex physical and biological environments” and IRSES project No. 295302 “Statistical physics in diverse realizations”. The authors thank Jonathan Adams from Thomson Reuters Research Analytics for the data and Ihor Mryglod for fruitful discussions.
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