Clinician and caregiver reports of autism features are both integral to receiving an autism diagnosis and appropriate intervention, yet informant discrepancies are present in clinical practice and may differ by demographic characteristics of the child and family. The present study examined how clinician-caregiver discrepancies in ratings of a child's autism-related behaviors relate to a child's sex at birth, age at first diagnosis, and amount of intervention received. Participants were 280 children (76.8% male, 67.9% White), 6-11 years old (