Do Domestic Dogs (Canis lupus familiaris) Perceive Numerosity Illusions?
Recent studies have showed that domestic dogs are only scantly susceptible to visual illusions, suggesting that the perceptual mechanisms might be different in humans and dogs. However, to date, none of these studies have utilized illusions that are linked to quantity discrimination. In the current...
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ftmdpi:oai:mdpi.com:/2076-2615/10/12/2304/ 2023-08-20T04:05:47+02:00 Do Domestic Dogs (Canis lupus familiaris) Perceive Numerosity Illusions? Miina Lõoke Lieta Marinelli Carla Jade Eatherington Christian Agrillo Paolo Mongillo agris 2020-12-04 application/pdf https://doi.org/10.3390/ani10122304 EN eng Multidisciplinary Digital Publishing Institute Companion Animals https://dx.doi.org/10.3390/ani10122304 https://creativecommons.org/licenses/by/4.0/ Animals; Volume 10; Issue 12; Pages: 2304 quantity dog numerical cognition gestalt illusion vision solitaire Text 2020 ftmdpi https://doi.org/10.3390/ani10122304 2023-08-01T00:36:13Z Recent studies have showed that domestic dogs are only scantly susceptible to visual illusions, suggesting that the perceptual mechanisms might be different in humans and dogs. However, to date, none of these studies have utilized illusions that are linked to quantity discrimination. In the current study, we tested whether dogs are susceptible to a linear version of the Solitaire illusion, a robust numerosity illusion experienced by most humans. In the first experiment, we tested dogs’ ability to discriminate items in a 0.67 and 0.75 numerical ratio. The results showed that dogs’ quantity discrimination abilities fall in between these two ratios. In Experiment 2, we presented the dogs with the Solitaire illusion pattern using a spontaneous procedure. No evidence supporting any numerosity misperception was found. This conclusion was replicated in Experiment 3, where we manipulated dogs’ initial experience with the stimuli and their contrast with the background. The lack of dogs’ susceptibility to the Solitaire illusion suggests that numerical estimation of dogs is not influenced by the spatial arrangement of the items to be enumerated. In view of the existing evidence, the effect may be extended to dogs’ quantitative abilities at large. Text Canis lupus MDPI Open Access Publishing Animals 10 12 2304 |
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ftmdpi |
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English |
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quantity dog numerical cognition gestalt illusion vision solitaire |
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quantity dog numerical cognition gestalt illusion vision solitaire Miina Lõoke Lieta Marinelli Carla Jade Eatherington Christian Agrillo Paolo Mongillo Do Domestic Dogs (Canis lupus familiaris) Perceive Numerosity Illusions? |
topic_facet |
quantity dog numerical cognition gestalt illusion vision solitaire |
description |
Recent studies have showed that domestic dogs are only scantly susceptible to visual illusions, suggesting that the perceptual mechanisms might be different in humans and dogs. However, to date, none of these studies have utilized illusions that are linked to quantity discrimination. In the current study, we tested whether dogs are susceptible to a linear version of the Solitaire illusion, a robust numerosity illusion experienced by most humans. In the first experiment, we tested dogs’ ability to discriminate items in a 0.67 and 0.75 numerical ratio. The results showed that dogs’ quantity discrimination abilities fall in between these two ratios. In Experiment 2, we presented the dogs with the Solitaire illusion pattern using a spontaneous procedure. No evidence supporting any numerosity misperception was found. This conclusion was replicated in Experiment 3, where we manipulated dogs’ initial experience with the stimuli and their contrast with the background. The lack of dogs’ susceptibility to the Solitaire illusion suggests that numerical estimation of dogs is not influenced by the spatial arrangement of the items to be enumerated. In view of the existing evidence, the effect may be extended to dogs’ quantitative abilities at large. |
format |
Text |
author |
Miina Lõoke Lieta Marinelli Carla Jade Eatherington Christian Agrillo Paolo Mongillo |
author_facet |
Miina Lõoke Lieta Marinelli Carla Jade Eatherington Christian Agrillo Paolo Mongillo |
author_sort |
Miina Lõoke |
title |
Do Domestic Dogs (Canis lupus familiaris) Perceive Numerosity Illusions? |
title_short |
Do Domestic Dogs (Canis lupus familiaris) Perceive Numerosity Illusions? |
title_full |
Do Domestic Dogs (Canis lupus familiaris) Perceive Numerosity Illusions? |
title_fullStr |
Do Domestic Dogs (Canis lupus familiaris) Perceive Numerosity Illusions? |
title_full_unstemmed |
Do Domestic Dogs (Canis lupus familiaris) Perceive Numerosity Illusions? |
title_sort |
do domestic dogs (canis lupus familiaris) perceive numerosity illusions? |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2020 |
url |
https://doi.org/10.3390/ani10122304 |
op_coverage |
agris |
genre |
Canis lupus |
genre_facet |
Canis lupus |
op_source |
Animals; Volume 10; Issue 12; Pages: 2304 |
op_relation |
Companion Animals https://dx.doi.org/10.3390/ani10122304 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/ani10122304 |
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Animals |
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10 |
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12 |
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2304 |
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1774716521749151744 |