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What is the ADI-R autism diagnostic interview?
The ADI-R (Autism Diagnostic Interview–Revised) is a detailed, structured interview a trained clinician conducts with a parent or caregiver, exploring a child's development, communication, social relating and repetitive behaviours. It is used as one part of a fuller autism assessment, never alone, and Developmental measurement supports care planning; diagnosis requires an appropriately qualified healthcare professional. under qualified clinician care.
In this answer 5 sections
The ADI-R is a careful, in-depth conversation with you about your child's development — one of the most trusted tools clinicians use to understand autism.
In short
The Autism Diagnostic Interview–Revised (ADI-R) is a detailed, structured interview that a trained clinician conducts with a parent or main caregiver. It gently explores your child's early development, communication, social relating and any repetitive behaviours or special interests. It is not a test for your child to sit — it draws on your everyday knowledge of them, and it is used as one part of a fuller assessment, never on its own.
What the ADI-R actually involves
- It's a conversation with you. A trained interviewer asks open questions about your child's history and current behaviour — how they communicate, play, relate to others and respond to changes in routine.
- It covers key developmental areas. Questions group around social interaction, language and communication, and repetitive or restricted behaviours and interests, including a look back at the early years.
- It is standardised. Every family is asked in a consistent, research-validated way, so the picture that emerges is reliable and comparable.
- It pairs with direct observation. Clinicians usually combine the ADI-R (your account) with a play-and-interaction observation of the child, plus developmental and medical history, to form a rounded understanding.
- It takes time — and that's a good thing. A thorough interview honours the detail of your child's story rather than rushing to a label.
Think of it as the clinician borrowing your years of close observation, and organising it into something clear and useful.
When it's used
The ADI-R supports the assessment of children where autism is being considered, alongside other tools. It is administered by clinicians with specific training. A diagnosis is never made from any single interview or questionnaire — it comes from a qualified clinician weighing the whole picture together.
The Pinnacle way
AbilityScore® is part of Pinnacle’s developmental assessment. Diagnosis, where needed, requires an appropriately qualified healthcare professional — never from an online form or a single questionnaire. Our clinicians use structured, internationally recognised approaches as part of a warm, child-friendly autism assessment, then build a plan around your child's strengths. Learn how our own clinician-administered AbilityScore® brings this together, or start at our home of child development.
Trusted sources
WHO ICD-11 framing of autism spectrum disorder; CDC "Learn the Signs. Act Early." developmental guidance; American Academy of Pediatrics (HealthyChildren.org) on developmental evaluation; American Speech-Language-Hearing Association on communication assessment.
Next step — Wondering whether an autism assessment is right for your child? Book a developmental assessment with a Pinnacle clinician.
This is general information, not a diagnosis — individual assessment and diagnosis require an appropriately qualified healthcare professional.
CONNECT THE ANSWER TO YOUR CHILD’S DAY
Something to notice. Something to discuss.
What to notice
Remember the ADI-R is one piece of an assessment, not the whole picture — clinicians also observe your child directly and review developmental and medical history before drawing any conclusion.
In everyday life
Before any developmental interview, jot down notes about your child's early milestones, how they play and communicate, and what soothes or unsettles them — your everyday observations are genuinely valuable.
Bring your observations and questions to your child’s professional. Choose activities that suit your child’s comfort, abilities and agreed plan.
Bring your questions to a first visitQuestions families ask
Is the ADI-R a test my child has to take?
No. The ADI-R is an interview with you, the parent or main caregiver, about your child's development and behaviour. Your child does not sit any test during it — clinicians may observe your child separately as part of the wider assessment.
Can the ADI-R alone diagnose autism?
No single tool diagnoses autism. The ADI-R is one trusted part of a fuller assessment that also includes direct observation of your child and a review of developmental and medical history, with a qualified clinician weighing everything together.
Who can carry out the ADI-R?
It is administered by clinicians who have completed specific training in the tool, so the interview is conducted in a consistent, validated way.
How long does the ADI-R take?
It is a detailed interview and can take a couple of hours, because it covers your child's history and current behaviour thoroughly. That depth is what makes the information so useful.
FOLLOW THE SOURCE
References behind this answer.
- Organisation website · further readingWHO ICD-11: autism spectrum disorder framing
- Source referenceCDC: Learn the Signs. Act Early.
- Organisation website · further readingAAP HealthyChildren.org: developmental evaluation
- Organisation website · further readingASHA: communication assessment
References are supplied with this answer. An organisation homepage offers further reading; it does not establish an independent review of this page.
Content attribution: SETU Consortium · Pinnacle Blooms Network.
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General information supports a conversation with an appropriately qualified professional. Advice, goals and support depend on the individual child.