Overview
The ADI-R is a comprehensive, standardized, semi-structured clinical interview with the parent/caregiver of an individual referred for evaluation of possible autism. Together with the ADOS-2 it represents the diagnostic gold standard.
Use cases
Research diagnosis in clinical trials and genetic/biomarker consortia.
Assessment intelligence
- Score range
- 0 – 100
- Direction
- Higher = worse
- Scoring method
- Algorithm
- Time to score
- ~150 min
- Social Interaction
- Communication
- Restricted/Repetitive Behaviors
| Severity | Threshold | Interpretation |
|---|---|---|
| Algorithm cutoff | Domain-specific | ASD classification when all three domain cutoffs are met and onset is before age 36 months |
Investigator-administered caregiver interview; companion to ADOS-2 in research-grade ASD diagnosis.
Editorial notes
Excellent inter-rater reliability; high diagnostic agreement with DSM-5 criteria.
Available languages
Validation studies (2)
- ADI-R diagnostic algorithms revisitedLord C, Rutter M, Le Couteur A. · Journal of Autism and Developmental Disorders · 1994DOI: 10.1007/BF02172145
- ADI-R DSM-5 concordance studyKim SH, Lord C. · Autism Research · 2012DOI: 10.1002/aur.1212
Related assessments
Gold-standard semi-structured observation for ASD diagnosis across the lifespan.
CARS-2Clinician rating of autism severity, with a high-functioning variant.
M-CHAT-R/FTwo-stage parent-report autism screener for toddlers.
SRS-2Quantitative rating of autistic social impairment, lifespan coverage.
RAADS-RThe Ritvo Autism Asperger Diagnostic Scale – Revised (RAADS-R) is an 80-item self-report questionnaire designed to identify autism in adults (18 years or older). Developed by Ritvo et al. (2011) as a revision of the original RAADS, it was created to address the growing need for validated assessment tools specifically designed for adult populations, where autism presentations may differ from those typically seen in childhood.