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When and why are motivational trade-offs evidence of sentience?

Brown, Simon Alexander Burns and Birch, Jonathan (2025) When and why are motivational trade-offs evidence of sentience? [Preprint]

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Abstract

Motivational trade-off behaviours, where an organism behaves as if flexibly weighing up an opportunity for reward against a risk of injury, are often regarded as evidence that the organism has valenced experiences like pain. This type of evidence has been influential in shifting opinion regarding crabs and insects. Critics note that (i) the precise links between trade-offs and consciousness are not fully known; (ii) simple trade-offs are evinced by the nematode worm Caenorhabditis elegans, mediated by a mechanism plausibly too simple to support conscious experience; (iii) pain can sometimes interfere with rather than support making trade-offs rationally. However, rather than undermining trade-off evidence in general, such cases show that the nature of the trade-off, and its underlying neural substrate, matter. We investigate precisely how.


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Item Type: Preprint
Creators:
CreatorsEmailORCID
Brown, Simon Alexander Burnssimonabbrown@gmail.com0000-0002-5606-6979
Birch, Jonathanj.birch2@lse.ac.uk0000-0001-7517-4759
Keywords: sentience, pain, motivational trade-offs, animal consciousness, marker approach
Subjects: Specific Sciences > Psychology > Evolutionary Psychology
Specific Sciences > Psychology > Comparative Psychology and Ethology
Specific Sciences > Cognitive Science > Consciousness
Specific Sciences > Psychology > Judgment and Decision Making
Depositing User: Dr. Simon Alexander Burns Brown
Date Deposited: 01 Mar 2025 13:19
Last Modified: 01 Mar 2025 13:19
Item ID: 24845
DOI or Unique Handle: https://doi.org/10.1098/rstb.2024.0309
Subjects: Specific Sciences > Psychology > Evolutionary Psychology
Specific Sciences > Psychology > Comparative Psychology and Ethology
Specific Sciences > Cognitive Science > Consciousness
Specific Sciences > Psychology > Judgment and Decision Making
Date: 2025
URI: https://philsci-archive.pitt.edu/id/eprint/24845

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