Mild Intellectual Disability: Characteristics, Challenges, and Support

Mild intellectual disability (MID) (formerly "mild mental retardation") is defined by:

• IQ range: ~55–69 (approx. 2–3 SD below mean).
• Adaptive functioning deficits: Conceptual (academic, judgment), social (interpersonal, gullibility), practical (self-care, money, safety).
• Onset: Before age 18.

Typical Profile

• Academic skills: Reach ~3rd–6th grade level with support.
• Communication: Concrete language; difficulty with abstract, nuance, sarcasm.
• Social: May miss cues, vulnerable to exploitation; desire relationships but lack skills.
• Independence: Can live semi-independently with supports (supported employment, shared housing, financial management help).
• Comorbidities: ADHD, anxiety, depression, epilepsy, autism spectrum (often co-occurring).

Supports and Interventions

• Special education (IEP), transition planning (IDEA).
• Life skills training (budgeting, transit, cooking, healthcare navigation).
• Social skills groups, cognitive-behavioral therapy.
• Supported employment, vocational rehab.
• Guardianship alternatives: supported decision-making, power of attorney.

Key Principle

Focus on strengths, self-determination, and community inclusion. People with MID lead meaningful lives with appropriate supports—disability is a mismatch between capacity and environment, not a fixed deficit.