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No Evidence for Biased Attention Towards Emotional Scenes in Bornean Orangutans (Pongo pygmaeus)

Laméris, D. W. ; van Berlo, E. ; Roth, T. S. ; Kret, M. E.

Affective science, 2022-12, Vol.3 (4), p.772-782 [Periódico revisado por pares]

Cham: Springer International Publishing

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  • Título:
    No Evidence for Biased Attention Towards Emotional Scenes in Bornean Orangutans (Pongo pygmaeus)
  • Autor: Laméris, D. W. ; van Berlo, E. ; Roth, T. S. ; Kret, M. E.
  • Assuntos: Behavioral Science and Psychology ; Psychology ; Research Article
  • É parte de: Affective science, 2022-12, Vol.3 (4), p.772-782
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
    Handling Editor: Karen Bales
  • Descrição: Attention may be swiftly and automatically tuned to emotional expressions in social primates, as has been demonstrated in humans, bonobos, and macaques, and with mixed evidence in chimpanzees, where rapid detection of emotional expressions is thought to aid in navigating their social environment. Compared to the other great apes, orangutans are considered semi-solitary, but still form temporary social parties in which sensitivity to others’ emotional expressions may be beneficial. The current study investigated whether implicit emotion-biased attention is also present in orangutans ( Pongo pygmaeus ). We trained six orangutans on the dot-probe paradigm: an established paradigm used in comparative studies which measures reaction time in response to a probe replacing emotional and neutral stimuli. Emotional stimuli consisted of scenes depicting conspecifics having sex, playing, grooming, yawning, or displaying aggression. These scenes were contrasted with neutral scenes showing conspecifics with a neutral face and body posture. Using Bayesian mixed modeling, we found no evidence for an overall emotion bias in this species. When looking at emotion categories separately, we also did not find substantial biases. We discuss the absence of an implicit attention bias for emotional expressions in orangutans in relation to the existing primate literature, and the methodological limitations of the task. Furthermore, we reconsider the emotional stimuli used in this study and their biological relevance.
  • Editor: Cham: Springer International Publishing
  • Idioma: Inglês
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