Attraction comes from many sources: Attentional and comparative processes in decoy effects

The attraction effect emerges when adding a seemingly irrelevant option (decoy) to a binary choice shifts preference towards a target option. This suggests that choice behaviour is dynamic, i.e., choice values are developed during deliberation, rather than manifesting some pre-existing preference se...

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Main Authors: Marco Marini, Alessandro Ansani, Fabio Paglieri
Format: Article
Language:English
Published: Cambridge University Press 2020-09-01
Series:Judgment and Decision Making
Subjects:
Online Access:http://journal.sjdm.org/19/191024a/jdm191024a.pdf
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author Marco Marini
Alessandro Ansani
Fabio Paglieri
author_facet Marco Marini
Alessandro Ansani
Fabio Paglieri
author_sort Marco Marini
collection DOAJ
description The attraction effect emerges when adding a seemingly irrelevant option (decoy) to a binary choice shifts preference towards a target option. This suggests that choice behaviour is dynamic, i.e., choice values are developed during deliberation, rather than manifesting some pre-existing preference set. Whereas several models of multialternative and multiattribute decision making consider dynamic choice processes as crucial to explain the attraction effect, empirically investigating the exact nature of such processes requires complementing choice output with other data. In this study, we focused on asymmetrically dominated decoys (i.e., decoys that are clearly dominated only by the target option) to examine the attentional and comparative processes responsible for the attraction effect. Through an eye-tracker paradigm, we showed that the decoy option can affect subjects’ preferences in two different and not mutually exclusive ways: by focusing the attention on the salient option and the dominance attribute, and by increasing comparisons with the choice dominant pattern. Although conceptually and procedurally distinct, both pathways for decoy effects produce an increase in preferences for the target option, in line with attentional and dynamic models of decision making. Eye-tracking data provide further details to the verification of such models, by highlighting the context-dependent nature of attention and the development of similarity-driven competitive decisional processes.
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spelling doaj.art-223ae70fd81a44b38dbac1b43a203aff2023-09-03T10:21:31ZengCambridge University PressJudgment and Decision Making1930-29752020-09-01155704726Attraction comes from many sources: Attentional and comparative processes in decoy effectsMarco MariniAlessandro AnsaniFabio PaglieriThe attraction effect emerges when adding a seemingly irrelevant option (decoy) to a binary choice shifts preference towards a target option. This suggests that choice behaviour is dynamic, i.e., choice values are developed during deliberation, rather than manifesting some pre-existing preference set. Whereas several models of multialternative and multiattribute decision making consider dynamic choice processes as crucial to explain the attraction effect, empirically investigating the exact nature of such processes requires complementing choice output with other data. In this study, we focused on asymmetrically dominated decoys (i.e., decoys that are clearly dominated only by the target option) to examine the attentional and comparative processes responsible for the attraction effect. Through an eye-tracker paradigm, we showed that the decoy option can affect subjects’ preferences in two different and not mutually exclusive ways: by focusing the attention on the salient option and the dominance attribute, and by increasing comparisons with the choice dominant pattern. Although conceptually and procedurally distinct, both pathways for decoy effects produce an increase in preferences for the target option, in line with attentional and dynamic models of decision making. Eye-tracking data provide further details to the verification of such models, by highlighting the context-dependent nature of attention and the development of similarity-driven competitive decisional processes.http://journal.sjdm.org/19/191024a/jdm191024a.pdfattraction effect decoy effect context effects attention decision making eye-trackingnakeywords
spellingShingle Marco Marini
Alessandro Ansani
Fabio Paglieri
Attraction comes from many sources: Attentional and comparative processes in decoy effects
Judgment and Decision Making
attraction effect
decoy effect
context effects
attention
decision making
eye-trackingnakeywords
title Attraction comes from many sources: Attentional and comparative processes in decoy effects
title_full Attraction comes from many sources: Attentional and comparative processes in decoy effects
title_fullStr Attraction comes from many sources: Attentional and comparative processes in decoy effects
title_full_unstemmed Attraction comes from many sources: Attentional and comparative processes in decoy effects
title_short Attraction comes from many sources: Attentional and comparative processes in decoy effects
title_sort attraction comes from many sources attentional and comparative processes in decoy effects
topic attraction effect
decoy effect
context effects
attention
decision making
eye-trackingnakeywords
url http://journal.sjdm.org/19/191024a/jdm191024a.pdf
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AT alessandroansani attractioncomesfrommanysourcesattentionalandcomparativeprocessesindecoyeffects
AT fabiopaglieri attractioncomesfrommanysourcesattentionalandcomparativeprocessesindecoyeffects