Pain and pessimism: dairy calves exhibit negative judgement bias following hot-iron disbudding.

Pain is defined as an unpleasant sensory and emotional experience associated with actual or potential tissue damage, but emotional states are difficult to directly assess in animals. Researchers have assessed pain using behavioural and physiological measures, but these approaches are limited to unde...

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Autores principales:	Heather W Neave, Rolnei R Daros, João H C Costa, Marina A G von Keyserlingk, Daniel M Weary
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/a0edda4f69b746fab07a0a84b2c4404b
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spelling	oai:doaj.org-article:a0edda4f69b746fab07a0a84b2c4404b2021-11-18T08:43:37ZPain and pessimism: dairy calves exhibit negative judgement bias following hot-iron disbudding.1932-620310.1371/journal.pone.0080556https://doaj.org/article/a0edda4f69b746fab07a0a84b2c4404b2013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24324609/?tool=EBIhttps://doaj.org/toc/1932-6203Pain is defined as an unpleasant sensory and emotional experience associated with actual or potential tissue damage, but emotional states are difficult to directly assess in animals. Researchers have assessed pain using behavioural and physiological measures, but these approaches are limited to understanding the arousal rather than valence of the emotional experience. Cognitive bias tasks show that depressed humans judge ambiguous events negatively and this technique has been applied to assess emotional states in animals. However, limited research has examined how pain states affect cognitive processes in animals. Here we present the first evidence of cognitive bias in response to pain in any non-human species. In two experiments, dairy calves (n = 17) were trained to respond differentially to red and white video screens and then tested with unreinforced ambiguous colours in two or three test sessions before and two sessions after the routine practice of hot-iron disbudding. After disbudding calves were more likely to judge ambiguous colours as negative. This 'pessimistic' bias indicates that post-operative pain following hot-iron disbudding results in a negative change in emotional state.Heather W NeaveRolnei R DarosJoão H C CostaMarina A G von KeyserlingkDaniel M WearyPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 12, p e80556 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Heather W Neave Rolnei R Daros João H C Costa Marina A G von Keyserlingk Daniel M Weary Pain and pessimism: dairy calves exhibit negative judgement bias following hot-iron disbudding.
description	Pain is defined as an unpleasant sensory and emotional experience associated with actual or potential tissue damage, but emotional states are difficult to directly assess in animals. Researchers have assessed pain using behavioural and physiological measures, but these approaches are limited to understanding the arousal rather than valence of the emotional experience. Cognitive bias tasks show that depressed humans judge ambiguous events negatively and this technique has been applied to assess emotional states in animals. However, limited research has examined how pain states affect cognitive processes in animals. Here we present the first evidence of cognitive bias in response to pain in any non-human species. In two experiments, dairy calves (n = 17) were trained to respond differentially to red and white video screens and then tested with unreinforced ambiguous colours in two or three test sessions before and two sessions after the routine practice of hot-iron disbudding. After disbudding calves were more likely to judge ambiguous colours as negative. This 'pessimistic' bias indicates that post-operative pain following hot-iron disbudding results in a negative change in emotional state.
format	article
author	Heather W Neave Rolnei R Daros João H C Costa Marina A G von Keyserlingk Daniel M Weary
author_facet	Heather W Neave Rolnei R Daros João H C Costa Marina A G von Keyserlingk Daniel M Weary
author_sort	Heather W Neave
title	Pain and pessimism: dairy calves exhibit negative judgement bias following hot-iron disbudding.
title_short	Pain and pessimism: dairy calves exhibit negative judgement bias following hot-iron disbudding.
title_full	Pain and pessimism: dairy calves exhibit negative judgement bias following hot-iron disbudding.
title_fullStr	Pain and pessimism: dairy calves exhibit negative judgement bias following hot-iron disbudding.
title_full_unstemmed	Pain and pessimism: dairy calves exhibit negative judgement bias following hot-iron disbudding.
title_sort	pain and pessimism: dairy calves exhibit negative judgement bias following hot-iron disbudding.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/a0edda4f69b746fab07a0a84b2c4404b
work_keys_str_mv	AT heatherwneave painandpessimismdairycalvesexhibitnegativejudgementbiasfollowinghotirondisbudding AT rolneirdaros painandpessimismdairycalvesexhibitnegativejudgementbiasfollowinghotirondisbudding AT joaohccosta painandpessimismdairycalvesexhibitnegativejudgementbiasfollowinghotirondisbudding AT marinaagvonkeyserlingk painandpessimismdairycalvesexhibitnegativejudgementbiasfollowinghotirondisbudding AT danielmweary painandpessimismdairycalvesexhibitnegativejudgementbiasfollowinghotirondisbudding
_version_	1718421400244453376

Pain and pessimism: dairy calves exhibit negative judgement bias following hot-iron disbudding.

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