Welcome to The Infant Sibling Study: Our Goal

The goal of the Infant Sibling Study is to understand the very earliest signs of autism, ADHD, and other developmental concerns in infancy. Infants with either an older sibling with autism, an older sibling with ADHD, or an older sibling who is typically developing are the subjects of our research, because siblings of children with autism or ADHD are at greater risk of developing these disorders themselves. We follow the development of these baby siblings from shortly after birth to age 3, monitoring early attention skills, communication, social interest, motor activity, and play behaviors. We use a variety of methods including eye tracking, interactive tasks between the baby and an examiner, and parent interviews. At age 3, we make preliminary diagnostic determinations (autism spectrum disorder, ADHD concerns, speech-language delay, etc.), with a follow-up evaluation when children are between 5 and 8 years old, to determine how performance on our tasks during infancy relates to later diagnostic outcomes. The ultimate goal of our research is to develop better methods for early detection of autism and ADHD.

Who Can Participate?

Babies who have an older sibling with:

  • Typical Development OR
  • (ASD) Autism Spectrum Disorder OR
  • (ADHD) Attention Deficit Hyperactivity Disorder

Learn About Study Participation

  • 5 visits to the MIND Institute between 6 and 36 months of age.
  • Assessments including measures of:
    • Play
    • Language
    • Social development
    • Parent-child interaction
    • Eye-tracking
  • Close monitoring of your baby’s development, with feedback from expert clinicians. 
  • $25 reimbursement for each visit, plus $50 for completing questionnaires

If you have any questions or are interested in participating, please contact:

Infant Sibling Study
916-703-0297
ahill@ucdavis.edu