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Perceptual and Category Processing of the Uncanny Valley Hypothesis' Dimension of Human Likeness: Some Methodological Issues

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Self-face perception in 12-month-old infants: A study using the morphing technique.

Hiroshi Nitta¹, Kazuhide Hashiya²

¹Graduate School of Human-Environment Studies, Kyushu University, Fukuoka, Japan; Japan Society for the Promotion of Science, Tokyo, Japan.

Infant Behavior & Development

|December 17, 2020

Summary

Twelve-month-old infants can distinguish subtle facial differences. Infants showed less preference for morphed faces, suggesting early self-face representation development and processing challenges.

Keywords:

Facial representation Infancy Self Uncanny valley Visual experience

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Area of Science:

Developmental Psychology
Cognitive Neuroscience
Infant Perception

Background:

Self-face recognition is crucial for social development.
Understanding infant face perception provides insights into early cognitive abilities.

Purpose of the Study:

To investigate 12-month-old infants' ability to perceive their own face.
To explore how infants process self-resembling faces compared to unfamiliar faces.

Main Methods:

Utilized the morphing technique with 24 twelve-month-old infants.
Presented stimuli including self-face, unfamiliar infant face, and morphed faces.
Measured infant fixation duration to assess visual preference.

Main Results:

Infants exhibited shorter fixation durations for morphed faces versus self or unfamiliar faces.
No significant preferences were observed in the control experiment using only unfamiliar faces.
Results suggest infants detected subtle facial feature differences.

Conclusions:

Twelve-month-old infants demonstrate an ability to discern variations in facial features.
Reduced preference for morphed faces may indicate increased processing costs, potentially explained by the uncanny valley hypothesis.
Early self-face representations appear to form by the end of the first year of life.