Judgement and ranking: living with hidden bias

António Osório

Annals of Operations Research, 2017, vol. 253, issue 1, No 22, 518 pages

Abstract: Abstract The complexity and subjectivity of the judgement task conceals the existence of biases that undermines the quality of the process. This paper presents a weighted aggregation function that attempts to reduce the influence of biased judgements on the final score. We also discuss a set of desirable properties. The proposed weighted aggregation function is able to correct the “nationalism bias” found by Emerson et al. (Am Stat 63(2):124–131, 2009) in the 2000 Olympic Games diving competition and suggest the possibility of a “reputation bias”. Our results can be applied to judgement sports and other activities that require the aggregation of several personal evaluations.

Keywords: Weighted aggregation function; Judgement by grading; Nationalism bias; Reputation bias; Bias correction; Olympic games (search for similar items in EconPapers)
JEL-codes: D03 D72 D81 (search for similar items in EconPapers)
Date: 2017
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Citations: View citations in EconPapers (1)

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DOI: 10.1007/s10479-016-2341-y

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