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Updated: Jun 23, 2026

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Published on: May 15, 2019
18-Month-olds can perceive Mooney faces.
Hirokazu Doi1, Tadashi Koga, Kazuyuki Shinohara
1Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki City, Nagasaki Prefecture, Japan.
Eighteen-month-old infants can detect facial information in impoverished images (Mooney faces), unlike younger infants. This developmental milestone shows improving face perception abilities in early childhood.
Area of Science:
- Developmental Psychology
- Cognitive Neuroscience
- Infant Perception
Background:
- Facial information detection is crucial for infant development, even in suboptimal visual conditions.
- Mooney faces, a type of impoverished face image, are used to study face perception abilities.
Purpose of the Study:
- To investigate the developmental trajectory of facial information detection in infants.
- To examine infant perception of Mooney faces at different age groups (6, 12, and 18 months).
Main Methods:
- Infants were presented with upright and inverted Mooney faces.
- Preference for upright over inverted Mooney faces was measured to assess perception.
Main Results:
- Eighteen-month-old infants showed a significant preference for upright Mooney faces.
- Six- and 12-month-old infants did not demonstrate discrimination between upright and inverted Mooney faces.
Conclusions:
- Eighteen-month-olds possess the ability to perceive Mooney faces, indicating developing face processing skills.
- The ability to perceive impoverished facial information may emerge later in infancy, with further research needed for younger age groups.
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