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Autism Diagnosis Interview (ADI)

Explore the benefits and use of the Autism Diagnosis Interview-Revised (ADI-R) for accurate autism assessment and management.

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By Russell Tan on Aug 2, 2025.

Fact Checked by Ericka Pingol.

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What is the Autism Diagnosis Interview-Revised (ADI-R)?

The Autism Diagnostic Interview-Revised (ADI-R) is an investigator-based diagnostic tool designed to assess autism spectrum disorder (ASD) in children and adults with a mental age of at least 24 months. This semi-structured interview is administered by a trained clinician or psychologist and is conducted with the individual’s parents or primary caregivers to obtain a detailed developmental history. The autism diagnosis interview ADI process offers vital insights into early developmental milestones and behaviors.

The ADI-R consists of 93 standardized questions organized into key domains that include reciprocal social interactions, communication and language, restricted and repetitive behaviors, and other clinically relevant behaviors such as aggression or self-injury. It also includes questions that help determine whether developmental abnormalities were present before the age of 36 months—an important criterion in diagnosing autism spectrum disorders.

The assessment typically takes between 1.5 to 2.5 hours to complete and requires a quiet, distraction-free environment. Interviewers use open-ended questions and follow-up probes to gather detailed responses, which are then scored using standardized ADI-R algorithms. These scores assist clinicians in evaluating whether the individual meets diagnostic criteria for autism.

Autism Diagnosis Interview (ADI) Template

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How is it scored?

The ADI-R scoring system is based on a coded ADI-R comprehensive algorithm that evaluates responses across three main domains: qualitative abnormalities in reciprocal social interactions, communication and language, and restricted, repetitive, and stereotyped behavior patterns.

Each item is scored on a scale ranging from 0 to 3, where 0 indicates typical behavior and higher scores denote more significant deviations from typical development.

The scores are then compared to empirically established cutoffs to distinguish autism from other autism spectrum disorders. A high score in each of the three domains is indicative of a diagnosis of autism spectrum disorders (ASDs).

How to use our ADI-R report form template

The Autism Diagnostic Interview-Revised (ADI-R) is a copyrighted assessment tool that may be purchased through Pearson Clinical or other authorized distributors. Due to copyright restrictions, we are unable to provide the full ADI-R tool.

However, to support your assessment, Carepatron has created a supplementary ADI-R report form template. While it does not replace the official ADI-R instrument, this template can be a helpful resource for taking structured notes during the interview process or for organizing additional observations. Here's how to use it:

Step 1: Download the resource

Get a copy of the template using the "Download" link on this page. It's also available in our resources library.

Step 2: Print or use the digital format

You can choose to print out the template or use it in its digital format. We recommend using a tablet or laptop for ease of typing and organization, especially when referencing the ADI-R manual chapter or ADI-R interview booklet.

Step 3: Use during assessments

Use the space provided in the template to jot additional notes or observations during your patient's ADI-R autism diagnostic assessment. This will help you keep track of important details and refer back to them when needed.

Step 4: Save and store

Save the completed template in a secure location, either digitally or as a hard copy. This documentation can serve as a useful reference for future assessments or clinical discussions, including reviews of the ADI-R test report.

Next steps after using the ADI-R

After completing the ADI-R, the following steps are typically taken to proceed with care and further evaluations:

Review the results

A trained clinician reviews the scores and determines whether they meet the diagnostic criteria for ASD based on the cutoffs provided by the ADI-R. This review also includes considering any previous assessments and current behavioral observations.

Communicate the findings

The clinician discusses the results with the caregivers and, if appropriate, with the individual assessed. This conversation covers the diagnostic findings and the implications for the individual's care and support needs, using terms and tools provided in the ADI-R manual. Should you need further reference, support materials and resources like the ADI-R training video program LMS may help.

Plan further assessments

Further assessments may be necessary depending on the results and the individual's age and specific symptoms. These can include medical evaluations, psychological assessments, or speech and language therapy assessments to understand the individual's needs comprehensively.

Develop a treatment plan

Based on the comprehensive assessments, a personalized treatment plan is developed. This plan may include behavioral interventions, educational recommendations, therapy sessions, and possibly medication management. Tools like the Childhood Autism Rating Scale may also be used in conjunction.

Implement support strategies

Implement the treatment and support strategies, engaging educational and therapeutic professionals as necessary. Regular follow-up assessments are also scheduled to monitor the individual's progress and adapt the treatment plan as needed. These assessments are crucial for responding to changes in the individual's condition or needs over time and may require updating documentation such as the ADI-R test report.

Benefits of using the ADI-R

The ADI-R offers several significant benefits for diagnosing ASD:

  1. Comprehensive assessment: The ADI-R provides a detailed, qualitative analysis of an individual's behavior across three crucial domains: social interaction, communication, and repetitive behaviors. This thoroughness helps in making a comprehensive evaluation of ASD symptoms.
  2. Standardization: As a standardized tool, the ADI-R ensures consistency in the diagnostic process across different practitioners and settings, contributing to the reliability and validity of the diagnosis.
  3. Diagnostic accuracy: The detailed nature of the ADI-R, combined with established scoring systems and thresholds, enhances the accuracy of autism diagnosis, distinguishing ASD from other developmental disorders.
  4. Guided intervention planning: The results can inform targeted intervention strategies by identifying specific challenges and strengths in the individual’s behavior, facilitating more personalized and effective treatment plans.
  5. Research utility: The ADI-R is widely used in research to ensure consistent diagnostic criteria, making it invaluable for studies on autism, its causes, and potential treatments. This contributes to a better understanding of the spectrum and advances in the field.

Commonly asked questions

The ADI-R aims to provide a comprehensive assessment tool for diagnosing autism in individuals by collecting detailed information on their developmental history and current behavior through structured interviews with caregivers.

The ADI-R typically takes between 1.5 to 2.5 hours to administer, depending on the complexity of the individual's behaviors and the thoroughness of the caregiver's responses.

The ADI-R consists of approximately 93 questions covering various aspects of behavior and development related to autism spectrum disorders.

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