Currently Recruiting Studies Application and Validation of the RITA-T (Rapid Interactive screening Test for Autism in Toddlers) in Children 3-5 years Old Are you a parent/caregiver of a child with developmental delay or autism? Developing New Diagnostic Tools for Autism Exploring Sleep Patterns and Differences in Children with Autism and Neurotypical Children Online Research Opportunity ages 12 – 36 months SPARK for Autism Social Communication Intervention for Toddlers with Autism Spectrum Disorder