Uncertainty about rater variance and small dimension effects impact reliability in supervisor ratings

Jackson, Duncan, Michaelides, George ORCID: https://orcid.org/0000-0002-4224-7728, Dewberry, Chris, Jones, Amanda, Toms, Simon, Schwenke, Benjamin and Yang, Wei-Ning (2022) Uncertainty about rater variance and small dimension effects impact reliability in supervisor ratings. Human Performance. ISSN 0895-9285 (In Press)

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Abstract

We modelled the effects commonly described as defining the measurement structure of supervisor performance ratings. In doing so, we contribute to different theoretical perspectives, including components of the multifactor and mediated models of performance ratings. Across 2 samples from the Jackson et al. (2020) data set (Sample 1, Nratees = 392, Nraters = 244; Sample 2, Nratees = 342, Nraters = 397), we found a structure primarily reflective of general ( > 27% of variance explained) and rater-related (> 49%) effects, with relatively small performance dimension effects (between 1% and 11%). We drew on findings from the assessment center literature to approximate the proportion of rater variance that might theoretically contribute to reliability in performance ratings. We found that even moderate contributions of rater-related variance to reliability resulted in a sizable impact on reliability estimates, drawing them closer to accepted criteria.

Item Type: Article
Faculty \ School: Faculty of Social Sciences > Norwich Business School
Depositing User: LivePure Connector
Date Deposited: 04 Aug 2022 10:30
Last Modified: 11 Aug 2022 09:30
URI: https://ueaeprints.uea.ac.uk/id/eprint/87080
DOI:

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