How Overconfidence Bias Influences Suboptimality in Perceptual Decision Making - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Experimental Psychology: Human Perception and Performance Année : 2023

How Overconfidence Bias Influences Suboptimality in Perceptual Decision Making

Résumé

In perceptual decision making, it is often found that human observers combine sensory information and prior knowledge suboptimally. Typically, in detection tasks, when an alternative is a priori more likely to occur, observers choose it more frequently to account for the unequal base rate but not to the extent they should, a phenomenon referred to as “conservative decision bias” (i.e., observers do not shift their decision criterion enough). One theoretical explanation of this phenomenon is that observers are overconfident in their ability to interpret sensory information, resulting in overweighting the sensory information relative to prior knowledge. Here, we derived formally this candidate model, and we tested it in a visual discrimination task in which we manipulated the prior probabilities of occurrence of the stimuli. We measured confidence in decisions and decision criterion placement in two separate experimental sessions for the same participants (N = 69). Both overconfidence bias and conservative decision bias were found in our data, but critically the link that was predicted between these two quantities was absent. Our data suggested instead that when informed about the a priori probability, overconfident participants put less effort into processing sensory information. These findings offer new perspectives on the role of overconfidence bias to explain suboptimal decisions.
Fichier principal
Vignette du fichier
haunguerlot-2022 suboptimal cues.pdf (1.26 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04197403 , version 1 (06-09-2023)

Identifiants

Citer

Marine Hainguerlot, Thibault Gajdos, Jean-Christophe Vergnaud, Vincent de Gardelle. How Overconfidence Bias Influences Suboptimality in Perceptual Decision Making. Journal of Experimental Psychology: Human Perception and Performance, 2023, 49 (4), pp.537-548. ⟨10.1037/xhp0001091⟩. ⟨hal-04197403⟩
78 Consultations
165 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More