# Standardised tools for assessing Intellectual Disability in early childhood

Canonical: https://pinnacleblooms.org/ask/which-standardised-tools-are-used-to-assess-intellectual-disability-in-early-childhood
Publisher: Pinnacle Blooms Network / Bharath Healthcare Laboratories Private Limited

Early-childhood intellectual disability (ICD-11 6A00) needs a paired battery: a standardised cognitive/developmental tool (Bayley-4, WPPSI-IV, Mullen, Griffiths) plus an independent adaptive measure (Vineland-3, ABAS-3), with India-validated options like DASII. Both axes — intellectual and adaptive functioning — must show deficits, and below ~5 years results read as developmental functioning, not fixed IQ.

*The right tool at the right age turns a clinical hunch into a defensible developmental profile.*

## In short
In early childhood, intellectual disability (ICD-11 6A00) is assessed using a **paired battery**: a standardised cognitive/developmental measure plus an independent adaptive-behaviour measure — because 6A00 requires deficits in **both** intellectual functioning and adaptive functioning, confirmed before a diagnosis stands. No single instrument is sufficient, and below roughly 5 years results are interpreted as developmental functioning, not a fixed IQ.

## The instruments clinicians use
**Cognitive / developmental functioning**
- **Bayley Scales of Infant and Toddler Development (Bayley-4)** — cognitive, language and motor domains, ~1–42 months.
- **Wechsler Preschool & Primary Scale of Intelligence (WPPSI-IV)** — from ~2 years 6 months.
- **Mullen Scales of Early Learning** and **Griffiths Scales** — early developmental profiling.
- **Stanford–Binet (SB-5)** — extends into the lower preschool range.

**Adaptive behaviour (essential second axis)**
- **Vineland Adaptive Behavior Scales (Vineland-3)** — communication, daily living, socialisation, motor.
- **Adaptive Behavior Assessment System (ABAS-3)** — caregiver/teacher report from birth.

In the Indian context, locally validated tools such as the **Developmental Profile** and **DASII (Developmental Assessment Scale for Indian Infants)** support culturally appropriate norming. Always pair with hearing and vision screening to exclude sensory confounds.

## When this is meaningful
Formal cognitive scores stabilise after ~5 years; before that, document **global developmental delay** and re-assess. Interpret scores alongside developmental history and direct observation — never in isolation.

## The Pinnacle way
Developmental measurement supports care planning; diagnosis requires an appropriately qualified healthcare professional., under qualified clinician care — never from an app or a single test sheet. Our clinician-administered structured assessment integrates these standardised measures into one calibrated developmental picture. Explore [Intellectual Disability](/intellectual-disability), our [developmental assessment pathway](/developmental-assessment), and [how the AbilityScore® is calculated](/ask/what-is-the-abilityscore-and-how-is-it-calculated).

## Trusted sources
WHO ICD-11 6A00 (Disorders of intellectual development); CDC developmental milestones; Indian Academy of Pediatrics; AAP HealthyChildren guidance.

**Next step —** Refer or co-assess with a Pinnacle clinical team to formalise a developmental profile [here](/developmental-assessment).

This is general information, not a diagnosis — individual assessment and diagnosis require an appropriately qualified healthcare professional.

## Sources
- WHO ICD-11 6A00 · Disorders of intellectual development: https://icd.who.int/browse11
- CDC — Learn the Signs. Act Early.: https://www.cdc.gov/child-development
- AAP HealthyChildren — developmental health: https://www.healthychildren.org

## Connected topics and perspectives
- Conditions: https://pinnacleblooms.org/ask/conditions
- Therapist: https://pinnacleblooms.org/ask/lens/stakeholder/therapist
- Cognitive: https://pinnacleblooms.org/ask/lens/domain/cognitive
- Assessment: https://pinnacleblooms.org/ask/lens/intent/assessment
- Measure: https://pinnacleblooms.org/ask/lens/lifecycle/measure
- Special Education: https://pinnacleblooms.org/ask/lens/route/special-education
- Early Clarity: https://pinnacleblooms.org/ask/lens/empowerment/early_clarity

## Related question paths

### Understand the subject
- What is Intellectual Disability, and what are its ICD-11 features in early childhood?: https://pinnacleblooms.org/ask/what-is-intellectual-disability-and-what-are-its-icd-11-features-in-early-childhood
- ICF functioning domains affected by Intellectual Disability in early childhood: https://pinnacleblooms.org/ask/which-icf-functioning-domains-does-intellectual-disability-affect-in-early-childhood
- How Intellectual Disability affects a child's daily life: https://pinnacleblooms.org/ask/how-does-intellectual-disability-affect-a-child-s-daily-life
- Is Intellectual Disability considered a disability?: https://pinnacleblooms.org/ask/is-intellectual-disability-considered-a-disability
- Is Intellectual Disability Genetic or Hereditary?: https://pinnacleblooms.org/ask/is-intellectual-disability-genetic-or-hereditary
- What are common myths about Intellectual Disability?: https://pinnacleblooms.org/ask/what-are-common-myths-about-intellectual-disability
- Levels of Intellectual Disability: https://pinnacleblooms.org/ask/what-are-the-types-or-levels-of-intellectual-disability
- What causes Intellectual Disability in children?: https://pinnacleblooms.org/ask/what-causes-intellectual-disability-in-children
- Early Intervention Outcomes for Intellectual Disability in Children Under 7: https://pinnacleblooms.org/ask/what-does-current-research-show-about-early-intervention-outcomes-for-intellectual-disability-in-children-under-7
- What is Intellectual Disability?: https://pinnacleblooms.org/ask/what-is-intellectual-disability
- ICD-11 Classification for Intellectual Disability (6A00): https://pinnacleblooms.org/ask/what-is-the-icd-11-classification-for-intellectual-disability
- What is the SNOMED CT concept for Intellectual Disability?: https://pinnacleblooms.org/ask/what-is-the-snomed-ct-concept-for-intellectual-disability

### Recognise signs & concerns
- Early indicators of Intellectual Disability for paediatricians: https://pinnacleblooms.org/ask/what-early-indicators-of-intellectual-disability-should-a-paediatrician-watch-for
- Can Intellectual Disability Be Cured?: https://pinnacleblooms.org/ask/can-intellectual-disability-be-cured
- Can Intellectual Disability Be Prevented?: https://pinnacleblooms.org/ask/can-intellectual-disability-be-prevented
- Do boys show Intellectual Disability differently?: https://pinnacleblooms.org/ask/do-boys-show-intellectual-disability-differently
- Do girls show Intellectual Disability differently?: https://pinnacleblooms.org/ask/do-girls-show-intellectual-disability-differently
- How a frontline health worker can spot possible Intellectual Disability early: https://pinnacleblooms.org/ask/how-can-a-frontline-health-worker-spot-a-child-with-possible-intellectual-disability-early
- What are the early signs of Intellectual Disability?: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-intellectual-disability
- Early Signs of Intellectual Disability in a 1-Year-Old Boy: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-intellectual-disability-in-a-1-year-old-boy
- What are the early signs of Intellectual Disability in a 1-year-old girl?: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-intellectual-disability-in-a-1-year-old-girl
- Early Signs of Intellectual Disability in a 12-to-18-Month-Old: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-intellectual-disability-in-a-12-to-18-month-old
- Early Signs of Intellectual Disability at 18-24 Months: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-intellectual-disability-in-a-18-to-24-month-old
- Early Signs of Intellectual Disability in a 2-Year-Old: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-intellectual-disability-in-a-2-year-old

### Explore causes & influences
- Are boys more likely to have intellectual disability?: https://pinnacleblooms.org/ask/are-boys-more-likely-to-have-intellectual-disability
- Are girls more likely to have Intellectual Disability?: https://pinnacleblooms.org/ask/are-girls-more-likely-to-have-intellectual-disability
- Early Intervention for Intellectual Disability and the UNCRPD/SDGs: https://pinnacleblooms.org/ask/how-does-early-intervention-for-intellectual-disability-advance-un-child-rights-uncrpd-and-the-sdgs
- Contributing Factors for Intellectual Disability: https://pinnacleblooms.org/ask/what-are-the-known-contributing-factors-for-intellectual-disability-in-early-childhood
- What causes Intellectual Disability in young children?: https://pinnacleblooms.org/ask/what-causes-intellectual-disability-in-young-children
- Cost-Effectiveness of Early Therapy for Intellectual Disability: https://pinnacleblooms.org/ask/what-is-the-cost-effectiveness-of-early-therapy-for-intellectual-disability-in-young-children
- Intellectual Disability in India: prevalence and public-health burden: https://pinnacleblooms.org/ask/what-is-the-prevalence-and-public-health-burden-of-intellectual-disability-among-young-children-in-india

### Understand assessment
- Validated outcome measures for Intellectual Disability in early childhood: https://pinnacleblooms.org/ask/which-validated-outcome-measures-are-used-to-study-intellectual-disability-in-early-childhood
- Standardised Instruments for the Cognitive Domain in Young Children: https://pinnacleblooms.org/ask/which-standardised-instruments-assess-the-cognitive-developmental-domain-in-young-children
- How Intellectual Disability Is Assessed in a Young Child: https://pinnacleblooms.org/ask/how-is-intellectual-disability-assessed-in-a-young-child
- How AbilityScore® Tracks Progress in Intellectual Disability: https://pinnacleblooms.org/ask/how-does-abilityscore-track-progress-in-a-child-with-intellectual-disability
- What an AbilityScore of 0–100 Means for Intellectual Disability: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-0-100-mean-for-a-child-with-intellectual-disability
- What does an AbilityScore of 100–200 mean for a child with Intellectual Disability?: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-100-200-mean-for-a-child-with-intellectual-disability
- What an AbilityScore of 200–300 Means in Intellectual Disability: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-200-300-mean-for-a-child-with-intellectual-disability
- What an AbilityScore of 300-400 Means for a Child with Intellectual Disability: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-300-400-mean-for-a-child-with-intellectual-disability
- What an AbilityScore of 400–500 Means in Intellectual Disability: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-400-500-mean-for-a-child-with-intellectual-disability
- What an AbilityScore of 500–600 Means in Intellectual Disability: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-500-600-mean-for-a-child-with-intellectual-disability
- What an AbilityScore of 600–700 Means in Intellectual Disability: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-600-700-mean-for-a-child-with-intellectual-disability
- AbilityScore 700–800 in Intellectual Disability: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-700-800-mean-for-a-child-with-intellectual-disability

### Explore therapy & support
- How is Intellectual Disability diagnosed in a child?: https://pinnacleblooms.org/ask/how-is-intellectual-disability-diagnosed-in-a-child
- How therapy helps a child with intellectual disability progress: https://pinnacleblooms.org/ask/how-does-therapy-help-a-child-with-intellectual-disability-make-progress
- Evidence-based therapy planning for Intellectual Disability: https://pinnacleblooms.org/ask/what-does-an-evidence-based-therapy-plan-for-a-young-child-with-intellectual-disability-include
- What therapy goals matter most for a child with Intellectual Disability?: https://pinnacleblooms.org/ask/what-therapy-goals-matter-most-for-a-child-with-intellectual-disability
- ICHI interventions for intellectual disability in young children: https://pinnacleblooms.org/ask/which-ichi-health-interventions-apply-to-intellectual-disability-in-young-children
- How Grandparents and Caregivers Can Support a Child with Intellectual Disability: https://pinnacleblooms.org/ask/as-a-grandparent-or-caregiver-how-can-i-support-a-child-with-intellectual-disability-day-to-day
- Can a child with Intellectual Disability attend mainstream school?: https://pinnacleblooms.org/ask/can-a-child-with-intellectual-disability-attend-a-mainstream-school
- Can a child with Intellectual Disability attend a regular school?: https://pinnacleblooms.org/ask/can-a-child-with-intellectual-disability-attend-a-regular-school
- Can a Child with Intellectual Disability Live Independently?: https://pinnacleblooms.org/ask/can-a-child-with-intellectual-disability-grow-up-to-live-independently
- How can a classroom teacher help a child with Intellectual Disability take part and learn?: https://pinnacleblooms.org/ask/how-can-a-classroom-teacher-help-a-child-with-intellectual-disability-take-part-and-learn
- Early intervention for Intellectual Disability in under-7s: https://pinnacleblooms.org/ask/how-can-a-district-early-intervention-programme-identify-and-support-children-under-7-with-intellectual-disability
- How a teacher can include a child with intellectual disability in a mainstream classroom: https://pinnacleblooms.org/ask/how-can-a-teacher-include-and-support-a-young-child-with-intellectual-disability-in-a-mainstream-classroom