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Face Detection and the Development of Own‐Species Bias in Infant Macaques ?

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Abstract Title:
Face Detection and the Development of Own‐Species Bias in Infant Macaques
 
Abstract Author(s):
Simpson EA1, Jakobsen KV2, Damon F3, Suomi SJ4, Ferrari PF5, Paukner A4.
 
Abstract:

In visually complex environments, numerous items compete for attention. Infants may exhibit attentional efficiency-privileged detection, attention capture, and holding-for face-like stimuli. However, it remains unknown when these biases develop and what role, if any, experience plays in this emerging skill. Here, nursery-reared infant macaques' (Macaca mulatta; n = 10) attention to faces in 10-item arrays of nonfaces was measured using eye tracking. With limited face experience, 3-week-old monkeys were more likely to detect faces and looked longer at faces compared to nonfaces, suggesting a robust face detection system. By 3 months, after peer exposure, infants looked faster to conspecific faces but not heterospecific faces, suggesting an own-species bias in face attention capture, consistent with perceptual attunement.

 

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