Differing patterns of face processing in infants at elevated likelihood of autism.

Area of Science:

• Developmental psychology
• Neuroscience
• Autism research

Background:

• Infants typically focus on faces, showing left-side attention and inversion effects.
• Autism spectrum disorder (ASD) is associated with altered face scanning and reduced typical biases.

Purpose of the Study:

• To investigate early face processing differences in infants with elevated likelihood of ASD.
• To examine inversion effects, side biases, and pupil responses in relation to ASD likelihood.

Main Methods:

• Studied infants at 7, 10, and 13 months using linear mixed modeling.
• Analyzed face inversion effects, left-right gaze biases, and pupil responses.
• Compared infants with elevated (EL) and typical (TL) likelihood of ASD.

Main Results:

• TL infants demonstrated greater left-side face attention than EL infants.
• EL infants showed larger pupil size increases over time compared to TL infants.
• Reduced left-side gaze bias and increased pupil response in EL infants suggest early ASD-related differences.

Conclusions:

• Early face processing variations, including gaze bias and pupil response, may be linked to elevated ASD likelihood.
• Further research is needed to explore hemispheric asymmetry and autonomic function.
• These infant differences could contribute to later ASD characteristics.