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Evaluating expert advice in forecasting: Users' reactions to presumed vs. experienced credibility
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Date
2017-01-01
Author
ÖNKAL, DİLEK
Gönül, Mustafa Sinan
Goodwin, Paul
Thomson, Mary
Oz, Esra
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This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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In expert knowledge elicitation (EKE) for forecasting, the perceived credibility of an expert is likely to affect the weighting attached to their advice. Four experiments have investigated the extent to which the implicit weighting depends on the advisor's experienced (reflecting the accuracy of their past forecasts), or presumed (based on their status) credibility. Compared to a control group, advice from a source with a high experienced credibility received a greater weighting, but having a low level of experienced credibility did not reduce the weighting. In contrast, a high presumed credibility did not increase the weighting relative to a control group, while a low presumed credibility decreased it. When there were opportunities for the two types of credibility to interact, a high experienced credibility tended to eclipse the presumed credibility if the advisees were non-experts. However, when the advisees were professionals, both the presumed and experienced credibility of the advisor were influential in determining the weight attached to the advice. (C) 2016 International Institute of Forecasters. Published by Elsevier B.V. All rights reserved.
Subject Keywords
Source credibility
,
Presumed credibility
,
Experienced credibility
,
Advice
,
Forecasting
,
Information use
URI
https://hdl.handle.net/11511/57661
Journal
INTERNATIONAL JOURNAL OF FORECASTING
DOI
https://doi.org/10.1016/j.ijforecast.2015.12.009
Collections
Department of Business Administration, Article