Coming close to the ideal alternative: The concordant-ranks strategy

We present the Concordant-Ranks (CR) strategy that decision makers use to quickly find an alternative that is proximate to an ideal alternative in a multi-attribute decision space. CR implies that decision makers prefer alternatives that exhibit concordant ranks between attribute values and attribut...

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Main Authors: Neda Kerimi, Henry Montgomery, Dan Zakay
Format: Article
Language:English
Published: Cambridge University Press 2011-04-01
Series:Judgment and Decision Making
Subjects:
Online Access:http://journal.sjdm.org/11/101223/jdm101223.pdf
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author Neda Kerimi
Henry Montgomery
Dan Zakay
author_facet Neda Kerimi
Henry Montgomery
Dan Zakay
author_sort Neda Kerimi
collection DOAJ
description We present the Concordant-Ranks (CR) strategy that decision makers use to quickly find an alternative that is proximate to an ideal alternative in a multi-attribute decision space. CR implies that decision makers prefer alternatives that exhibit concordant ranks between attribute values and attribute weights. We show that, in situations where the alternatives are equal in multi-attribute utility (MAU), minimization of the weighted Euclidean distance (WED) to an ideal alternative implies the choice of a CR alternative. In two experiments, participants chose among, as well as evaluated, alternatives that were constructed to be equal in MAU. In Experiment 1, four alternatives were designed in such a way that the choice of each alternative would be consistent with one particular choice strategy, one of which was the CR strategy. In Experiment 2, participants were presented with a CR alternative and a number of arbitrary alternatives. In both experiments, participants tended to choose the CR alternative. The CR alternative was on average evaluated as more attractive than other alternatives. In addition, measures of WED, between given alternatives and the ideal alternative, by and large agreed with the preference order for choices and attractiveness evaluations of the different types of alternatives. These findings indicate that both choices and attractiveness evaluations are guided by proximity of alternatives to an ideal alternative.
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spelling doaj.art-e2cf4fcdf0ba4c4fa17ed537b5f17e562023-09-02T15:21:34ZengCambridge University PressJudgment and Decision Making1930-29752011-04-0163196210Coming close to the ideal alternative: The concordant-ranks strategyNeda KerimiHenry MontgomeryDan ZakayWe present the Concordant-Ranks (CR) strategy that decision makers use to quickly find an alternative that is proximate to an ideal alternative in a multi-attribute decision space. CR implies that decision makers prefer alternatives that exhibit concordant ranks between attribute values and attribute weights. We show that, in situations where the alternatives are equal in multi-attribute utility (MAU), minimization of the weighted Euclidean distance (WED) to an ideal alternative implies the choice of a CR alternative. In two experiments, participants chose among, as well as evaluated, alternatives that were constructed to be equal in MAU. In Experiment 1, four alternatives were designed in such a way that the choice of each alternative would be consistent with one particular choice strategy, one of which was the CR strategy. In Experiment 2, participants were presented with a CR alternative and a number of arbitrary alternatives. In both experiments, participants tended to choose the CR alternative. The CR alternative was on average evaluated as more attractive than other alternatives. In addition, measures of WED, between given alternatives and the ideal alternative, by and large agreed with the preference order for choices and attractiveness evaluations of the different types of alternatives. These findings indicate that both choices and attractiveness evaluations are guided by proximity of alternatives to an ideal alternative.http://journal.sjdm.org/11/101223/jdm101223.pdfmulti-attribute decisionsconcordant ranksstrategiesweighted Euclidian distance.
spellingShingle Neda Kerimi
Henry Montgomery
Dan Zakay
Coming close to the ideal alternative: The concordant-ranks strategy
Judgment and Decision Making
multi-attribute decisions
concordant ranks
strategies
weighted Euclidian distance.
title Coming close to the ideal alternative: The concordant-ranks strategy
title_full Coming close to the ideal alternative: The concordant-ranks strategy
title_fullStr Coming close to the ideal alternative: The concordant-ranks strategy
title_full_unstemmed Coming close to the ideal alternative: The concordant-ranks strategy
title_short Coming close to the ideal alternative: The concordant-ranks strategy
title_sort coming close to the ideal alternative the concordant ranks strategy
topic multi-attribute decisions
concordant ranks
strategies
weighted Euclidian distance.
url http://journal.sjdm.org/11/101223/jdm101223.pdf
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