Disentangling Great Apes' Decoy-Effect Bias in a Food Choice Task

Sánchez-Amaro, Alejandro; Altinok, Nazli; Heintz, Christophe; Call, Josep

Disentangling Great Apes' Decoy-Effect Bias in a Food Choice Task

Dateien

Sanchez-Amaro_2-13o4253rbncmv1.pdfGröße: 535.77 KBDownloads: 119

Datum

2019

Autor:innen

Sánchez-Amaro, Alejandro

Altinok, Nazli

Heintz, Christophe

Call, Josep

Open Access-Veröffentlichung

Open Access Gold

Sammlungen

Psychologie

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Animal Behavior and Cognition. Unicus Marketing Group. 2019, 6(3), pp. 213-222. ISSN 2372-5052. eISSN 2372-4323. Available under: doi: 10.26451/abc.06.03.05.2019

Zusammenfassung

The decoy effect is a violation of rationality that occurs when the relative preference between two target options changes with the addition of a third option, called the decoy, that is no better than the target options but worse than one of the options on one attribute. The presence of the decoy increases the chance that the option that dominates it on this attribute is chosen over the other target option. The current study tested decoy effects with great apes’ food preferences. We presented apes with two target items, grape and banana, and a third item, the decoy, which was either a smaller grape or a smaller piece of banana. We found that apes’ decisions were not influenced by the presence of a decoy. In general, apes did not increase their choices in favor of the target item that dominated the decoy. This would indicate that great apes are not vulnerable to the cognitive biases that cause decoy effects in humans, at least in cases where choice is between two different types of food. We discuss what can be concluded about the psychological causes of human irrational choices and their evolutionary origin.

Fachgebiet (DDC)

150 Psychologie

Schlagwörter

Decoy-effect, Rationality, Great apes, Food preferences

Zitieren

ISO 690

SÁNCHEZ-AMARO, Alejandro, Nazli ALTINOK, Christophe HEINTZ, Josep CALL, 2019. Disentangling Great Apes' Decoy-Effect Bias in a Food Choice Task. In: Animal Behavior and Cognition. Unicus Marketing Group. 2019, 6(3), pp. 213-222. ISSN 2372-5052. eISSN 2372-4323. Available under: doi: 10.26451/abc.06.03.05.2019

BibTex

@article{SanchezAmaro2019Disen-56232,
  year={2019},
  doi={10.26451/abc.06.03.05.2019},
  title={Disentangling Great Apes' Decoy-Effect Bias in a Food Choice Task},
  number={3},
  volume={6},
  issn={2372-5052},
  journal={Animal Behavior and Cognition},
  pages={213--222},
  author={Sánchez-Amaro, Alejandro and Altinok, Nazli and Heintz, Christophe and Call, Josep}
}

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