Testing of behavioural asymmetries as markers for brain lateralization of emotional states in pet dogs: A critical review

Simon, Tim, Guo, Kun, Frasnelli, Elisa , Wilkinson, Anna and Mills, Daniel S. (2022) Testing of behavioural asymmetries as markers for brain lateralization of emotional states in pet dogs: A critical review. Neuroscience & Biobehavioral Reviews, 143 . p. 104950. ISSN 0149-7634

Full content URL: https://doi.org/10.1016/j.neubiorev.2022.104950

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Testing of behavioural asymmetries as markers for brain lateralization of emotional states in pet dogs: A critical review
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Abstract

Domestic dogs (Canis familiaris) hold a unique position in human society, particularly in their role as social companions; as such, it is important to understand their emotional lives. There has been growing interest in studying behavioural biases in dogs as indirect markers (reflecting lateralized brain activity) of their emotional states. In this paper, we not only review the previous literature on emotion-related behavioural lateralization in dogs, but also propose and apply the concept of evidential weight to previous research. This allows us to examine different hypotheses about emotion-related brain asymmetries (i.e., Right-Hemisphere-, Valence-, Approach-Withdrawal-Hypothesis) on the basis of a “likelihood-ist” concept of evidence. We argue that previous studies have not been able to discriminate well between competing hypotheses and tended to focus on confirmation bias than critically assess different hypotheses; as such there is a strong case for more systematic investigation to pull these theories apart. We present the areas for future research and explain their importance for understanding the emotional lives of dogs.

Keywords:Lateralized behaviour, Brain lateralization, Emotion, Dog, Right-Hemisphere-Hypothesis, Valence-Hypothesis, Approach-Withdrawal-Hypothesis, Evidence, Comparative assessment of competing, Indicators of animal well-being
Subjects:C Biological Sciences > C830 Experimental Psychology
Divisions:College of Social Science > School of Psychology
College of Science > School of Life and Environmental Sciences > Department of Life Sciences
ID Code:52692
Deposited On:20 Dec 2022 16:40

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