Use of the M-CHAT on this website is solely for the purpose of assessing risk for autism spectrum disorders (ASD); not to provide a diagnosis of ASD. The M-CHAT relies on self-report. All responses should be verified by a clinician with definitive diagnosis made on clinical assessment grounds that take into account understanding of the questionnaire and other relevant information regarding the patient. Diagnosis of ASD may also involve physician, cognitive, hearing, and speech assessment(s).
This screener was designed for children between the ages of 16 months to 30 months. If your child is younger than 16 months or older than 30 months and you have concerns about their development, it is advised that you start by discussing concerns with your child’s primary care physician.