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Absolute brain size predicts dog breed differences in executive function

Research output: Contribution to journalArticle

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Absolute brain size predicts dog breed differences in executive function. / Horschler, Daniel J.; Hare, Brian; Call, Josep; Kaminski, Juliane; Miklosi, Adam; MacLean, Evan L.

In: Animal Cognition, Vol. 22, No. 2, 03.2019, p. 187-198.

Research output: Contribution to journalArticle

Harvard

Horschler, DJ, Hare, B, Call, J, Kaminski, J, Miklosi, A & MacLean, EL 2019, 'Absolute brain size predicts dog breed differences in executive function' Animal Cognition, vol. 22, no. 2, pp. 187-198. https://doi.org/10.1007/s10071-018-01234-1

APA

Horschler, D. J., Hare, B., Call, J., Kaminski, J., Miklosi, A., & MacLean, E. L. (2019). Absolute brain size predicts dog breed differences in executive function. Animal Cognition, 22(2), 187-198. https://doi.org/10.1007/s10071-018-01234-1

Vancouver

Horschler DJ, Hare B, Call J, Kaminski J, Miklosi A, MacLean EL. Absolute brain size predicts dog breed differences in executive function. Animal Cognition. 2019 Mar;22(2):187-198. https://doi.org/10.1007/s10071-018-01234-1

Author

Horschler, Daniel J. ; Hare, Brian ; Call, Josep ; Kaminski, Juliane ; Miklosi, Adam ; MacLean, Evan L. / Absolute brain size predicts dog breed differences in executive function. In: Animal Cognition. 2019 ; Vol. 22, No. 2. pp. 187-198.

Bibtex - Download

@article{4b2dee96c01e4521a4b13d1c8ef7d07b,
title = "Absolute brain size predicts dog breed differences in executive function",
abstract = "Large-scale phylogenetic studies of animal cognition have revealed robust links between absolute brain volume and species differences in executive function. However, past comparative samples have been composed largely of primates, which are characterized by evolutionarily derived neural scaling rules. Therefore, it is currently unknown whether positive associations between brain volume and executive function reflect a broad-scale evolutionary phenomenon, or alternatively, a unique consequence of primate brain evolution. Domestic dogs provide a powerful opportunity for investigating this question due to their close genetic relatedness, but vast intraspecific variation. Using citizen science data on more than 7000 purebred dogs from 74 breeds, and controlling for genetic relatedness between breeds, we identify strong relationships between estimated absolute brain weight and breed differences in cognition. Specifically, larger-brained breeds performed significantly better on measures of short-term memory and self-control. However, the relationships between estimated brain weight and other cognitive measures varied widely, supporting domain-specific accounts of cognitive evolution. Our results suggest that evolutionary increases in brain size are positively associated with taxonomic differences in executive function, even in the absence of primate-like neuroanatomy. These findings also suggest that variation between dog breeds may present a powerful model for investigating correlated changes in neuroanatomy and cognition among closely related taxa.",
keywords = "Cognitive evolution, Brain evolution, Brain size, Executive function, Breed differences, Citizen science",
author = "Horschler, {Daniel J.} and Brian Hare and Josep Call and Juliane Kaminski and Adam Miklosi and MacLean, {Evan L.}",
note = "DJH was supported by an Emil W. Haury Fellowship from the School of Anthropology at the University of Arizona, and a Graduate Access Fellowship from the Graduate College at the University of Arizona. {\'A}M was supported by the Hungarian Academy of Sciences (MTA-ELTE Comparative Ethology Research Group, MTA 01 031).",
year = "2019",
month = "3",
doi = "10.1007/s10071-018-01234-1",
language = "English",
volume = "22",
pages = "187--198",
journal = "Animal Cognition",
issn = "1435-9448",
publisher = "Springer",
number = "2",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Absolute brain size predicts dog breed differences in executive function

AU - Horschler, Daniel J.

AU - Hare, Brian

AU - Call, Josep

AU - Kaminski, Juliane

AU - Miklosi, Adam

AU - MacLean, Evan L.

N1 - DJH was supported by an Emil W. Haury Fellowship from the School of Anthropology at the University of Arizona, and a Graduate Access Fellowship from the Graduate College at the University of Arizona. ÁM was supported by the Hungarian Academy of Sciences (MTA-ELTE Comparative Ethology Research Group, MTA 01 031).

PY - 2019/3

Y1 - 2019/3

N2 - Large-scale phylogenetic studies of animal cognition have revealed robust links between absolute brain volume and species differences in executive function. However, past comparative samples have been composed largely of primates, which are characterized by evolutionarily derived neural scaling rules. Therefore, it is currently unknown whether positive associations between brain volume and executive function reflect a broad-scale evolutionary phenomenon, or alternatively, a unique consequence of primate brain evolution. Domestic dogs provide a powerful opportunity for investigating this question due to their close genetic relatedness, but vast intraspecific variation. Using citizen science data on more than 7000 purebred dogs from 74 breeds, and controlling for genetic relatedness between breeds, we identify strong relationships between estimated absolute brain weight and breed differences in cognition. Specifically, larger-brained breeds performed significantly better on measures of short-term memory and self-control. However, the relationships between estimated brain weight and other cognitive measures varied widely, supporting domain-specific accounts of cognitive evolution. Our results suggest that evolutionary increases in brain size are positively associated with taxonomic differences in executive function, even in the absence of primate-like neuroanatomy. These findings also suggest that variation between dog breeds may present a powerful model for investigating correlated changes in neuroanatomy and cognition among closely related taxa.

AB - Large-scale phylogenetic studies of animal cognition have revealed robust links between absolute brain volume and species differences in executive function. However, past comparative samples have been composed largely of primates, which are characterized by evolutionarily derived neural scaling rules. Therefore, it is currently unknown whether positive associations between brain volume and executive function reflect a broad-scale evolutionary phenomenon, or alternatively, a unique consequence of primate brain evolution. Domestic dogs provide a powerful opportunity for investigating this question due to their close genetic relatedness, but vast intraspecific variation. Using citizen science data on more than 7000 purebred dogs from 74 breeds, and controlling for genetic relatedness between breeds, we identify strong relationships between estimated absolute brain weight and breed differences in cognition. Specifically, larger-brained breeds performed significantly better on measures of short-term memory and self-control. However, the relationships between estimated brain weight and other cognitive measures varied widely, supporting domain-specific accounts of cognitive evolution. Our results suggest that evolutionary increases in brain size are positively associated with taxonomic differences in executive function, even in the absence of primate-like neuroanatomy. These findings also suggest that variation between dog breeds may present a powerful model for investigating correlated changes in neuroanatomy and cognition among closely related taxa.

KW - Cognitive evolution

KW - Brain evolution

KW - Brain size

KW - Executive function

KW - Breed differences

KW - Citizen science

U2 - 10.1007/s10071-018-01234-1

DO - 10.1007/s10071-018-01234-1

M3 - Article

VL - 22

SP - 187

EP - 198

JO - Animal Cognition

T2 - Animal Cognition

JF - Animal Cognition

SN - 1435-9448

IS - 2

ER -

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ID: 257948064