Honesty and fairness reduce the sunk-cost effect

The sunk-cost effect (SCE) is the tendency to continue investing in an unsuccessful activity because of previous investments that cannot be recovered. We examine the SCE when continued investment is dishonest and unfair, and whether moral identity predicts decision-making in sunk-cost moral scenari...

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Main Authors: Zach Hamzagic, Tobias Krettenauer
Format: Article
Language:English
Published: University Library Heidelberg 2025-06-01
Series:Journal of Dynamic Decision Making
Subjects:
Online Access:https://journals.ub.uni-heidelberg.de/index.php/jddm/article/view/106637
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author Zach Hamzagic
Tobias Krettenauer
author_facet Zach Hamzagic
Tobias Krettenauer
author_sort Zach Hamzagic
collection DOAJ
description The sunk-cost effect (SCE) is the tendency to continue investing in an unsuccessful activity because of previous investments that cannot be recovered. We examine the SCE when continued investment is dishonest and unfair, and whether moral identity predicts decision-making in sunk-cost moral scenarios. Moral identity is the degree of importance of being moral to one’s sense of identity, and prior research has found moral identity predicts moral behaviour. We find that the SCE was smaller if continuing with the sunk-cost decisions were dishonest and unfair, and stronger moral identity predicted lower likelihood to continue investment if doing so was dishonest and unfair. Participants were also more likely to cite moral reasons for their decisions than sunk-cost reasons in scenarios that sunk costs were high and continuing would be dishonest and unfair. We suggest people place a greater importance on being honest and fair compared to paying off previous investments, especially for those with a stronger moral identity. These findings may help explain decision-making in situations where sunk costs are at odds with moral considerations.
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spelling doaj-art-eeaa5df3bba449e48c26d4e0919e9fe12025-08-20T03:25:30ZengUniversity Library HeidelbergJournal of Dynamic Decision Making2365-80372025-06-0111110.11588/jddm.2025.1.106637Honesty and fairness reduce the sunk-cost effectZach Hamzagic0Tobias Krettenauer1Wilfrid Laurier UniversityWilfred Laurier University The sunk-cost effect (SCE) is the tendency to continue investing in an unsuccessful activity because of previous investments that cannot be recovered. We examine the SCE when continued investment is dishonest and unfair, and whether moral identity predicts decision-making in sunk-cost moral scenarios. Moral identity is the degree of importance of being moral to one’s sense of identity, and prior research has found moral identity predicts moral behaviour. We find that the SCE was smaller if continuing with the sunk-cost decisions were dishonest and unfair, and stronger moral identity predicted lower likelihood to continue investment if doing so was dishonest and unfair. Participants were also more likely to cite moral reasons for their decisions than sunk-cost reasons in scenarios that sunk costs were high and continuing would be dishonest and unfair. We suggest people place a greater importance on being honest and fair compared to paying off previous investments, especially for those with a stronger moral identity. These findings may help explain decision-making in situations where sunk costs are at odds with moral considerations. https://journals.ub.uni-heidelberg.de/index.php/jddm/article/view/106637Sunk-cost effectdecision-makingmoral identityindividual differences
spellingShingle Zach Hamzagic
Tobias Krettenauer
Honesty and fairness reduce the sunk-cost effect
Journal of Dynamic Decision Making
Sunk-cost effect
decision-making
moral identity
individual differences
title Honesty and fairness reduce the sunk-cost effect
title_full Honesty and fairness reduce the sunk-cost effect
title_fullStr Honesty and fairness reduce the sunk-cost effect
title_full_unstemmed Honesty and fairness reduce the sunk-cost effect
title_short Honesty and fairness reduce the sunk-cost effect
title_sort honesty and fairness reduce the sunk cost effect
topic Sunk-cost effect
decision-making
moral identity
individual differences
url https://journals.ub.uni-heidelberg.de/index.php/jddm/article/view/106637
work_keys_str_mv AT zachhamzagic honestyandfairnessreducethesunkcosteffect
AT tobiaskrettenauer honestyandfairnessreducethesunkcosteffect