Examining holistic processing strategies in dogs and humans through gaze behavior
Soon Young Park, Diederick C. Niehorster, Ludwig Huber, Zsófia Virányi, Stanisław Jacek Wroński, Stanisław Jacek Wroński, Stanisław Jacek Wroński

TL;DR
This study compares how humans and dogs look at faces to determine if they use holistic processing strategies, finding that humans do so more consistently than dogs.
Contribution
The study introduces a method for direct cross-species comparison of gaze behavior in holistic face processing.
Findings
Humans preferentially fixate on the central facial region for both human and dog faces.
Dogs show no initial fixation preference but may use holistic processing when viewing their own species.
Findings suggest species differences in holistic processing strategies.
Abstract
Extensive studies have shown that humans process faces holistically, considering not only individual features but also the relationships among them. Knowing where humans and dogs fixate first and the longest when they view faces is highly informative, because the locations can be used to evaluate whether they use a holistic face processing strategy or not. However, the conclusions reported by previous eye-tracking studies appear inconclusive. To address this, we conducted an experiment with humans and dogs, employing experimental settings and analysis methods that can enable direct cross-species comparisons. Our findings reveal that humans, unlike dogs, preferentially fixated on the central region, surrounded by the inner facial features, for both human and dog faces. This pattern was consistent for initial and sustained fixations over seven seconds, indicating a clear tendency towards…
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Taxonomy
TopicsFace Recognition and Perception · Human-Animal Interaction Studies · Evolutionary Psychology and Human Behavior
