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

This study is designed to see if watching how babies look at things can help find developmental delays, like autism, early. Babies who are 9 months old will use a special camera called an *eye-tracking device* to check where they look while watching videos of other kids. Parents will be asked if they want to join the study during their baby's doctor visit. They will fill out forms about their baby's health at different ages: 9, 12, 15, 18, 21, and 24 months old.

If a baby shows signs of a developmental delay, they will be invited to meet experts for more checks when they are between 18–26 months old. If the baby does not show any signs, about 10% will still be invited for a check-up. Parents will learn about their child's strengths and needs after this assessment.

• The study involves multiple visits and forms over two years.
• Babies must be healthy and around 9 months old.
• Parents will get feedback on their child's development.