What is ADOS-2
ADOS-2 (Autism Diagnostic Observation Schedule, Second Edition) is a standardised diagnostic instrument recognised as a key component of the "gold standard" for diagnosing autism spectrum disorder (ASD) worldwide. The assessment involves observing a child's behaviour and functioning in structured social situations — during play, conversations, and tasks designed according to a detailed protocol.
ADOS-2 is not a test you "pass" or "fail". It is a structured observation that provides the clinician with objective data on how a child communicates, forms relationships, responds to stimuli, and organises play. Results are coded according to strict criteria developed by international experts.
At NidoMed, ADOS-2 assessments are conducted by certified specialists with experience in diagnosing children from 12 months to 7 years of age.
When to consider an ADOS-2 assessment
- Your child avoids eye contact, does not respond to their name, or does not point.
- Your child is not developing speech or speech is developing atypically (echolalia, lack of conversational exchange).
- Your child does not imitate gestures, facial expressions, or actions of others.
- Play is repetitive and stereotyped; the child does not engage in play with peers.
- Your child reacts intensely to changes in routine or environment.
- Your child displays unusual sensory behaviours (spinning, hand-flapping, fascination with light or movement).
- A paediatrician, psychologist, or educator has suggested an ASD evaluation.
- You observe that your child's development differs from that of their peers and you want a professional assessment.
What to expect
The ADOS-2 assessment is a single session lasting up to 60 minutes, during which the clinician engages with the child and guides them through planned activities. For young children, a parent is present during the assessment. The atmosphere is calm and child-friendly — the clinician adapts to the child, not the other way around. After the session, the clinician analyses and codes the results, and at a second visit discusses them with the parents and presents therapeutic recommendations.