Repeated judgment sampling: Boundaries

This paper investigates the boundaries of the recent result that eliciting more than one estimate from the same person and averaging these can lead to accuracy gains in judgment tasks. It first examines its generality, analysing whether the kind of question being asked has an effect on the size of p...

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Main Author: Johannes Müller-Trede
Format: Article
Language:English
Published: Cambridge University Press 2011-06-01
Series:Judgment and Decision Making
Subjects:
Online Access:https://www.cambridge.org/core/product/identifier/S1930297500001893/type/journal_article
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author Johannes Müller-Trede
author_facet Johannes Müller-Trede
author_sort Johannes Müller-Trede
collection DOAJ
description This paper investigates the boundaries of the recent result that eliciting more than one estimate from the same person and averaging these can lead to accuracy gains in judgment tasks. It first examines its generality, analysing whether the kind of question being asked has an effect on the size of potential gains. Experimental results show that the question type matters. Previous results reporting potential accuracy gains are reproduced for year-estimation questions, and extended to questions about percentage shares. On the other hand, no gains are found for general numerical questions. The second part of the paper tests repeated judgment sampling’s practical applicability by asking judges to provide a third and final answer on the basis of their first two estimates. In an experiment, the majority of judges do not consistently average their first two answers. As a result, they do not realise the potential accuracy gains from averaging.
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spelling doaj.art-d4b5ce40b2f8488cb83f3a2decc521ea2023-09-03T09:46:15ZengCambridge University PressJudgment and Decision Making1930-29752011-06-01628329410.1017/S1930297500001893Repeated judgment sampling: BoundariesJohannes Müller-Trede0Graduate Program of Economics, Finance and Management, Departament d’Economia i Empresa, Universitat Pompeu Fabra, Ramon Trias Fargas 25-27, 08005, Barcelona, SpainThis paper investigates the boundaries of the recent result that eliciting more than one estimate from the same person and averaging these can lead to accuracy gains in judgment tasks. It first examines its generality, analysing whether the kind of question being asked has an effect on the size of potential gains. Experimental results show that the question type matters. Previous results reporting potential accuracy gains are reproduced for year-estimation questions, and extended to questions about percentage shares. On the other hand, no gains are found for general numerical questions. The second part of the paper tests repeated judgment sampling’s practical applicability by asking judges to provide a third and final answer on the basis of their first two estimates. In an experiment, the majority of judges do not consistently average their first two answers. As a result, they do not realise the potential accuracy gains from averaging.https://www.cambridge.org/core/product/identifier/S1930297500001893/type/journal_articlerepeated judgmentsjudgment accuracyaveraging
spellingShingle Johannes Müller-Trede
Repeated judgment sampling: Boundaries
Judgment and Decision Making
repeated judgments
judgment accuracy
averaging
title Repeated judgment sampling: Boundaries
title_full Repeated judgment sampling: Boundaries
title_fullStr Repeated judgment sampling: Boundaries
title_full_unstemmed Repeated judgment sampling: Boundaries
title_short Repeated judgment sampling: Boundaries
title_sort repeated judgment sampling boundaries
topic repeated judgments
judgment accuracy
averaging
url https://www.cambridge.org/core/product/identifier/S1930297500001893/type/journal_article
work_keys_str_mv AT johannesmullertrede repeatedjudgmentsamplingboundaries