Eye-catching odors: olfaction elicits sustained gazing to faces and eyes in 4-month-old infants

Area of Science:

• Developmental Psychology
• Neuroscience
• Olfactory Perception

Background:

• Infant visual attention is crucial for social development.
• The role of non-visual cues, like odors, in modulating early social attention is not fully understood.

Purpose of the Study:

• To investigate if maternal body odor influences infants' attention to visual stimuli.
• To determine if odors can selectively direct infant gaze towards meaningful visual targets, specifically faces.

Main Methods:

• Forty-eight 4-month-old infants participated in the study.
• Infants were exposed to either their mother's body odor or a control condition.
• Eye-movement tracking recorded visual exploration of faces and cars.

Main Results:

• Infants showed a spontaneous preference for faces over cars.
• This preference for faces was significantly enhanced by the presence of maternal body odor.
• Infants looked longer at the eyes within faces when exposed to the odor, suggesting enhanced social cue processing.

Conclusions:

• Four-month-old infants are sensitive to the influence of odors on visual attention.
• Early social attention to faces is mediated by both visual and non-visual (olfactory) cues.
• Maternal odors may play a role in guiding infant attention towards social stimuli.