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dc.contributor.authorHagen, Nils Thorstein
dc.identifier.citationHagen, N.T. (2014). Reversing the byline hierarchy: The effect of equalizing bias on the accreditation of primary, secondary and senior authors. Journal of Informetrics, 8(3), 618-627. doi:nb_NO
dc.description.abstractEqualizing bias (EqB) is a systematic inaccuracy which arises when authorship credit is divided equally among coauthors who have not contributed equally. As the number of coauthors increases, the diminishing amount of credit allocated to each additional coauthor is increasingly composed of equalizing bias such that when the total number of coauthors exceeds 12, the credit score of most coauthors is composed mostly of EqB. In general, EqB reverses the byline hierarchy and skews bibliometric assessments by underestimating the contribution of primary authors, i.e. those adversely affected by negative EqB, and overestimating the contribution of secondary authors, those benefitting from positive EqB. The positive and negative effects of EqB are balanced and sum to zero, but are not symmetrical. The lack of symmetry exacerbates the relative effects of EqB, and explains why primary authors are increasingly outnumbered by secondary authors as the number of coauthors increases. Specifically, for a paper with 50 coauthors, the benefit of positive EqB goes to 39 secondary authors while the burden of negative EqB befalls 11 primary authors. Relative to harmonic estimates of their actual contribution, the EqB of the 50 coauthors ranged from <−90% to >350%. Senior authorship, when it occurs, is conventionally indicated by a corresponding last author and recognized as being on a par with a first author. If senior authorship is not recognized, then the credit lost by an unrecognized senior author is distributed among the other coauthors as part of their EqB. The powerful distortional effect of EqB is compounded in bibliometric indices and performance rankings derived from biased equal credit. Equalizing bias must therefore be corrected at the source by ensuring accurate accreditation of all coauthors prior to the calculation of aggregate publication metrics.nb_NO
dc.rightsNavngivelse-Ikkekommersiell-IngenBearbeidelse 3.0 Norge*
dc.subjectCoauthor creditnb_NO
dc.subjectHarmonic formulanb_NO
dc.subjectEqualizing biasnb_NO
dc.subjectBibliometric countingnb_NO
dc.subjectSenior authorshipnb_NO
dc.titleReversing the byline hierarchy : The effect of equalizing bias on the accreditation of primary, secondary and senior authorsnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewed
dc.rights.holder© 2014, The Author(s)
dc.subject.nsiVDP::Social science: 200::Library and information science: 320::Bibliometrics: 324nb_NO
dc.source.journalJournal of Informetricsnb_NO
dc.description.localcodePaid Open Access

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