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The standard Bayesian model is normatively invalid for biological brains

Moran, R; Tsetsos, K; (2018) The standard Bayesian model is normatively invalid for biological brains. Behavioral and Brain Sciences , 41 , Article e237. 10.1017/S0140525X18001449. Green open access

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Abstract

We show that the benchmark Bayesian framework that Rahnev & Denison (R&D) used to assess optimality is actually suboptimal under realistic assumptions about how noise corrupts decision making in biological brains. This model is therefore invalid qua normative standard. We advise against generally forsaking optimality and argue that a biologically constrained definition of optimality could serve as an important driver for scientific progress.

Type: Article
Title: The standard Bayesian model is normatively invalid for biological brains
Location: England
Open access status: An open access version is available from UCL Discovery
DOI: 10.1017/S0140525X18001449
Publisher version: http://doi.org/10.1017/S0140525X18001449
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology > Imaging Neuroscience
URI: https://discovery.ucl.ac.uk/id/eprint/10069756
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