SenseToKnow Autism Screening Device Validation Study

Inclusion Criteria: 1. Duke Health pediatric patient at enrollment 2. 16-\<37 months of age at enrollment 3. Parent/legal guardian speaks English or Spanish 4. Parent/legal guardian understands and voluntarily provides informed consent Exclusion Criteria: 1. Severe motor impairment that precludes study measure completion 2. Known genetic disorders 3. Severe hearing or visual impairment as determined on physical examination according to parent report 4. Acute illnesses likely to prevent successful or valid data collection 5. Uncontrolled epilepsy or seizure disorder 6. History or presence of a clinically significant medical disease, or a mental state that could confound the study or be detrimental to the subject as determined by the investigator 7. Acute exacerbations of chronic illnesses likely to prevent successful or valid data collection 8. Receiving therapies that affect vision 9. Parent/legal guardian and/or investigator believes that the child will be unable/unwilling to sit in the parent's lap to watch the app videos 10. Parent/legal guardian indicates that they or their child is unwilling or unable to complete the app administration, surveys, or diagnostic assessment 11. Participants who are otherwise judged as unable to comply with the protocol by the investigator 12. Any other factor that the investigator feels would make the study measures invalid