English, Article, Journal or magazine article edition: Ignoring Information in Binary Choice with Continuous Variables: When is Less 'More'? Robin Hogarth; Natalia Karelaia

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Bookmark: http://trove.nla.gov.au/version/154868
Physical Description
  • preprint
Language
  • English

Edition details

Title
  • Ignoring Information in Binary Choice with Continuous Variables: When is Less 'More'?
Author
  • Robin Hogarth
  • Natalia Karelaia
Physical Description
  • preprint
Notes
  • When can a single variable be more accurate in binary choice than multiple sources of information? We derive analytically the probability that a single variable (SV) will correctly predict one of two choices when both criterion and predictor are continuous variables. We further provide analogous derivations for multiple regression (MR) and equal weighting (EW) and specify the conditions under which the models differ in expected predictive ability. Key factors include variability in cue validities, intercorrelation between predictors, and the ratio of predictors to observations in MR. Theory and simulations are used to illustrate the differential effects of these factors. Results directly address why and when “one-reason” decision making can be more effective than analyses that use more information. We thus provide analytical backing to intriguing empirical results that, to date, have lacked theoretical justification. There are predictable conditions for which one should expect “less to be more.”
  • Decision making, bounded rationality, lexicographic rules, choice theory, Leex
  • RePEc:upf:upfgen:742
Language
  • English
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