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http://hdl.handle.net/2445/153942
Title: | Decoupling sensory from decisional choice biases in perceptual decision making |
Author: | Linares, Daniel Aguilar Lleyda, David López-Moliner, Joan |
Keywords: | Presa de decisions Percepció visual Decision making Visual perception |
Issue Date: | 27-Mar-2019 |
Publisher: | eLife Sciences |
Abstract: | The contribution of sensory and decisional processes to perceptual decision making is still unclear, even in simple perceptual tasks. When decision makers need to select an action from a set of balanced alternatives, any tendency to choose one alternative more often choice bias is consistent with a bias in the sensory evidence, but also with a preference to select that alternative independently of the sensory evidence. To decouple sensory from decisional biases, here we asked humans to perform a simple perceptual discrimination task with two symmetric alternatives under two different task instructions. The instructions varied the response mapping between perception and the category of the alternatives. We found that from 32 participants, 30 exhibited sensory biases and 15 decisional biases. The decisional biases were consistent with a criterion change in a simple signal detection theory model. Perceptual decision making, thus, even in simple scenarios, is affected by sensory and decisional choice biases. |
Note: | Reproducció del document publicat a: https://doi.org/10.7554/eLife.43994.001 |
It is part of: | eLife, 2019, vol. 8, p. e43994 |
URI: | http://hdl.handle.net/2445/153942 |
Related resource: | https://doi.org/10.7554/eLife.43994.001 |
ISSN: | 2050-084X |
Appears in Collections: | Articles publicats en revistes (IDIBAPS: Institut d'investigacions Biomèdiques August Pi i Sunyer) Articles publicats en revistes (Cognició, Desenvolupament i Psicologia de l'Educació) |
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