Screening for Autism in 9-Month-Olds by Measuring Social Visual Engagement

Inclusion Criteria: * Infants between the chronological ages of 8-10 months * Infants must be generally healthy with no acute illnesses likely to prevent successful or valid data collection (e.g., current vomiting, high fever, conjunctivitis affecting vision) * Participants' parents/caregivers must be able to understand and voluntarily provide written informed consent. Exclusion Criteria: \- Children will be excluded if they have signs of acute illness likely to prevent successful or valid data collection (e.g., conjunctivitis affecting vision, current vomiting, or high fever).