ID (Intellectual Disability)

What it means

A disability involving significant limitations in both intellectual functioning and adaptive behaviour, with onset during the developmental period. Support needs and abilities vary, and intellectual disability may co-occur with autism.

Term details

Category: diagnosis

Regional use: general

Last source check: July 28, 2026

Source

Check this definition against aaidd.org. Open the source before making health, education, funding, or legal decisions because guidance can change.

Continue learning

Browse the full autism & SEN glossary · Read source-checked autism guides

Report an unclear, incorrect, or outdated definition