Intellectual Disability

IQ TestIQ Glossary & Terms › Intellectual Disability
Intellectual disability is defined by significantly below-average intelligence, an IQ around 70 or below, combined with limitations in everyday adaptive skills. Both the score and real-world functioning must be considered, not the number alone.
📅 Last updated: 2026-06-18 · ✔ Reviewed by the All-Lifes editorial team · About · Methodology
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