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Impact of Model Performance History Information on User's Confidence in Decision Models: An Experimental Examination

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  • Waleed A. Muhanna
  • James J. Jiang
  • Roger Alan Pick

Abstract

Effective decision support systems (DSS) must supply decision- makers with information that allows them to make correct judgments. Unfortunately, human intuitive judgments are subject to a number of biases. Among the judgments that a user of a DSS must make is the selection of an appropriate model. When a decision maker is presented with a history of a model's usage and frequency of success during that usage, the decision maker must judge how confident he/she is in the output that comes from that model. We show, in a laboratory setting using seventy-five student subjects and forty- eight managers, that decision makers can be manipulated into irrational confidence levels. In a corporate setting, over- and under-confidence will result in either overreliance on unreliable models or in a failure to take advantage of a useful tool.

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  • Waleed A. Muhanna & James J. Jiang & Roger Alan Pick, "undated". "Impact of Model Performance History Information on User's Confidence in Decision Models: An Experimental Examination," Corporate Finance & Organizations _010, Ohio State University.
  • Handle: RePEc:wop:ohstfi:_010
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    File URL: http://www.cob.ohio-state.edu/dept/acctmis/fac/muhanna/research/chb.ps
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