# Validated outcome measures for non-verbal / minimally verbal presentation

Canonical: https://pinnacleblooms.org/ask/which-validated-outcome-measures-are-used-to-study-non-verbal-minimally-verbal-presentation-in-early-childhood
Publisher: Pinnacle Blooms Network / Bharath Healthcare Laboratories Private Limited

Studying non-verbal/minimally verbal presentation in early childhood uses a layered battery: MacArthur-Bates CDI, Mullen, PLS and Vineland for language and adaptive communication; CSBS, ESCS and natural-language sampling for non-verbal and spontaneous communication; and ADOS-2 for phenotyping. Floor effects are the key hazard, so change-sensitive, multi-method designs are preferred.

*For minimally verbal children, the right outcome measure is the difference between detecting real change and missing it entirely.*

## In short
Studying non-verbal and minimally verbal presentation in early childhood relies on a layered battery: a few well-validated instruments capture expressive and receptive language, others quantify functional and non-verbal communication, and observational coding schemes capture spontaneous vocalisations and gesture that standardised tests systematically under-count. No single measure suffices — the field favours multi-method designs combining direct assessment, caregiver report, and natural-language sampling. Floor effects on conventional language tests are the central methodological hazard, so measures sensitive to small, meaningful change are prioritised.

## The measurement landscape
**Language and communication (direct + caregiver report)**
- **MacArthur–Bates Communicative Development Inventories (CDI)** — caregiver-reported vocabulary and gesture; useful where direct testing floors out.
- **Mullen Scales of Early Learning** — receptive and expressive language subscales, age-equivalent scoring for low verbal ability.
- **Preschool Language Scale (PLS)** and **Reynell Developmental Language Scales** — receptive/expressive constructs in early childhood.
- **Vineland Adaptive Behavior Scales** — communication domain as a functional, real-world index.

**Non-verbal and spontaneous communication**
- **Communication and Symbolic Behavior Scales (CSBS)** — gesture, sounds, and social-communication acts pre-/early-verbal.
- **Natural Language Sample (NLS)** coding and automated vocalisation analysis (e.g. LENA-derived counts) for spontaneous utterances.
- **ESCS (Early Social Communication Scales)** — initiating joint attention and behaviour regulation.

**Anchors and global change**
- **ADOS-2 (Module 1 / Toddler)** for phenotyping, with caution as an outcome measure.
- Clinician-rated global change indices used alongside, not instead of, construct-specific tools.

## Methodological cautions for researchers
Conventional norm-referenced language tests frequently floor in this population, inflating measurement error and obscuring genuine gain. Mitigate with age-equivalent or growth-scale scoring, parallel natural-language sampling, and pre-registered sensitivity-to-change analyses. Triangulating direct assessment, caregiver report and observational coding reduces single-method bias.

## The Pinnacle way
AbilityScore® is part of Pinnacle’s developmental assessment. Diagnosis, where needed, requires an appropriately qualified healthcare professional — never from an app, a form, or a research battery alone. Our research programme is built on **2.5 billion+ data points** and **25 million+ therapy sessions**, with **12 validated studies** informing how we track communication change. Explore the [non-verbal / minimally verbal profile](/nonverbal-minimally-verbal), our [speech therapy pathway](https://www.pinnacleblooms.org/top-speech-therapy-center-india-proven-improvement-rate), and [how the AbilityScore is established](/ask/what-is-the-abilityscore-and-how-is-it-calculated).

## Trusted sources
ASHA guidance on assessing minimally verbal and emerging communicators; WHO ICF framework for functioning-based outcomes; AAP developmental surveillance principles. Paraphrased; consult primary instrument manuals for psychometrics.

**Next step —** Researching outcomes in this population? [Partner with the Pinnacle research team](/research) to access validated, change-sensitive measurement.

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

## Sources
- ASHA — assessing emerging and minimally verbal communicators: https://www.asha.org
- WHO ICF — functioning-based outcomes framework: https://www.who.int/standards/classifications/international-classification-of-functioning-disability-and-health
- AAP — developmental surveillance principles: https://www.aap.org

## Connected topics and perspectives
- Conditions: https://pinnacleblooms.org/ask/conditions
- Researcher: https://pinnacleblooms.org/ask/lens/stakeholder/researcher
- Communication: https://pinnacleblooms.org/ask/lens/domain/communication
- Assessment: https://pinnacleblooms.org/ask/lens/intent/assessment
- Screen: https://pinnacleblooms.org/ask/lens/lifecycle/screen
- Screen: https://pinnacleblooms.org/ask/lens/route/screen
- Early Clarity: https://pinnacleblooms.org/ask/lens/empowerment/early_clarity

## Related question paths

### Understand the subject
- Early intervention outcomes for minimally verbal children under 7: https://pinnacleblooms.org/ask/what-does-current-research-show-about-early-intervention-outcomes-for-non-verbal-minimally-verbal-presentation-in-children-under-7
- How Being Non-Verbal or Minimally Verbal Affects Daily Life: https://pinnacleblooms.org/ask/how-does-non-verbal-minimally-verbal-presentation-affect-a-child-s-daily-life
- Is Non-Verbal / Minimally Verbal Presentation a Disability?: https://pinnacleblooms.org/ask/is-non-verbal-minimally-verbal-presentation-considered-a-disability
- Is Non-Verbal / Minimally Verbal Presentation genetic or hereditary?: https://pinnacleblooms.org/ask/is-non-verbal-minimally-verbal-presentation-genetic-or-hereditary
- Common myths about non-verbal / minimally verbal presentation: https://pinnacleblooms.org/ask/what-are-common-myths-about-non-verbal-minimally-verbal-presentation
- Types and Levels of Non-Verbal / Minimally Verbal Presentation: https://pinnacleblooms.org/ask/what-are-the-types-or-levels-of-non-verbal-minimally-verbal-presentation
- What Causes a Non-Verbal or Minimally Verbal Presentation?: https://pinnacleblooms.org/ask/what-causes-non-verbal-minimally-verbal-presentation-in-children
- What is Non-Verbal / Minimally Verbal Presentation?: https://pinnacleblooms.org/ask/what-is-non-verbal-minimally-verbal-presentation
- Non-Verbal / Minimally Verbal Presentation: https://pinnacleblooms.org/ask/what-is-non-verbal-minimally-verbal-presentation-and-what-are-its-icd-11-features-in-early-childhood
- What is Non-Verbal / Minimally Verbal Presentation?: https://pinnacleblooms.org/ask/what-is-non-verbal-minimally-verbal-presentation-and-what-does-it-look-like-in-early-childhood
- ICD-11 Classification for Non-Verbal / Minimally Verbal Presentation: https://pinnacleblooms.org/ask/what-is-the-icd-11-classification-for-non-verbal-minimally-verbal-presentation
- SNOMED CT Concept for Non-Verbal / Minimally Verbal Presentation: https://pinnacleblooms.org/ask/what-is-the-snomed-ct-concept-for-non-verbal-minimally-verbal-presentation

### Recognise signs & concerns
- Can Non-Verbal / Minimally Verbal Presentation Be Cured?: https://pinnacleblooms.org/ask/can-non-verbal-minimally-verbal-presentation-be-cured
- Can Non-Verbal / Minimally Verbal Presentation Be Prevented?: https://pinnacleblooms.org/ask/can-non-verbal-minimally-verbal-presentation-be-prevented
- Do boys show Non-Verbal / Minimally Verbal Presentation differently?: https://pinnacleblooms.org/ask/do-boys-show-non-verbal-minimally-verbal-presentation-differently
- Do girls show a minimally verbal presentation differently?: https://pinnacleblooms.org/ask/do-girls-show-non-verbal-minimally-verbal-presentation-differently
- How can a frontline health worker spot a possible non-verbal presentation early?: https://pinnacleblooms.org/ask/how-can-a-frontline-health-worker-spot-a-child-with-possible-non-verbal-minimally-verbal-presentation-early
- Should I worry my child may be non-verbal or minimally verbal?: https://pinnacleblooms.org/ask/should-i-be-worried-my-child-might-have-non-verbal-minimally-verbal-presentation
- Early Signs of a Non-Verbal or Minimally Verbal Presentation: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-non-verbal-minimally-verbal-presentation
- Early signs for talking development in a 1-year-old boy: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-non-verbal-minimally-verbal-presentation-in-a-1-year-old-boy
- Early Signs of Non-Verbal / Minimally Verbal Presentation in a 1-Year-Old Girl: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-non-verbal-minimally-verbal-presentation-in-a-1-year-old-girl
- Early Signs of a Non-Verbal / Minimally Verbal Presentation at 12–18 Months: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-non-verbal-minimally-verbal-presentation-in-a-12-to-18-month-old
- Early Signs of Non-Verbal / Minimally Verbal Presentation at 18–24 Months: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-non-verbal-minimally-verbal-presentation-in-a-18-to-24-month-old
- Early Signs of a Minimally Verbal 2-Year-Old: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-non-verbal-minimally-verbal-presentation-in-a-2-year-old

### Explore causes & influences
- Are boys more likely to have a non-verbal / minimally verbal presentation?: https://pinnacleblooms.org/ask/are-boys-more-likely-to-have-non-verbal-minimally-verbal-presentation
- Are girls more likely to have a non-verbal or minimally verbal presentation?: https://pinnacleblooms.org/ask/are-girls-more-likely-to-have-non-verbal-minimally-verbal-presentation
- Early Intervention for Non-Verbal Children: UNCRPD & SDGs: https://pinnacleblooms.org/ask/how-does-early-intervention-for-non-verbal-minimally-verbal-presentation-advance-un-child-rights-uncrpd-and-the-sdgs
- Contributing factors for non-verbal / minimally verbal presentation: https://pinnacleblooms.org/ask/what-are-the-known-contributing-factors-for-non-verbal-minimally-verbal-presentation-in-early-childhood
- What causes non-verbal / minimally verbal presentation?: https://pinnacleblooms.org/ask/what-causes-non-verbal-minimally-verbal-presentation-in-young-children
- Cost-effectiveness of early therapy for non-verbal children: https://pinnacleblooms.org/ask/what-is-the-cost-effectiveness-of-early-therapy-for-non-verbal-minimally-verbal-presentation-in-young-children
- Prevalence and public-health burden of non-verbal / minimally verbal presentation in India: https://pinnacleblooms.org/ask/what-is-the-prevalence-and-public-health-burden-of-non-verbal-minimally-verbal-presentation-among-young-children-in-india

### Understand assessment
- Standardised Assessment of Non-Verbal / Minimally Verbal Presentation: https://pinnacleblooms.org/ask/which-standardised-tools-are-used-to-assess-non-verbal-minimally-verbal-presentation-in-early-childhood
- Validated outcome measures for Social Communication Difficulties in early childhood: https://pinnacleblooms.org/ask/which-validated-outcome-measures-are-used-to-study-social-communication-difficulties-in-early-childhood
- How Non-Verbal Is Defined and Measured in Early Childhood Research: https://pinnacleblooms.org/ask/how-is-non-verbal-defined-and-measured-as-a-developmental-construct-in-early-childhood-research
- Validated Outcome Measures for Speech and Language Delay: https://pinnacleblooms.org/ask/which-validated-outcome-measures-are-used-to-study-speech-and-language-delay-in-early-childhood
- How a clinician assesses and tracks non-verbal communication progress: https://pinnacleblooms.org/ask/how-can-a-clinician-assess-and-track-a-child-s-progress-in-learning-to-non-verbal
- How AbilityScore tracks progress in a non-verbal or minimally verbal child: https://pinnacleblooms.org/ask/how-does-abilityscore-track-progress-in-a-child-with-non-verbal-minimally-verbal-presentation
- How a Non-Verbal or Minimally Verbal Young Child Is Assessed: https://pinnacleblooms.org/ask/how-is-non-verbal-minimally-verbal-presentation-assessed-in-a-young-child
- How Is Non-Verbal / Minimally Verbal Presentation Assessed in Children Under 7?: https://pinnacleblooms.org/ask/how-is-non-verbal-minimally-verbal-presentation-assessed-in-children-under-7
- What an AbilityScore® Means for a Non-Verbal Child: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-0-100-mean-for-a-child-with-non-verbal-minimally-verbal-presentation
- What an AbilityScore of 100–200 Means for a Non-Verbal Child: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-100-200-mean-for-a-child-with-non-verbal-minimally-verbal-presentation
- What does an AbilityScore of 200–300 mean for a child with Non-Verbal / Minimally Verbal Presentation?: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-200-300-mean-for-a-child-with-non-verbal-minimally-verbal-presentation
- AbilityScore 300–400 for a Non-Verbal / Minimally Verbal Child: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-300-400-mean-for-a-child-with-non-verbal-minimally-verbal-presentation

### Explore therapy & support
- Supporting a Non-Verbal or Minimally Verbal Child: https://pinnacleblooms.org/ask/as-a-grandparent-or-caregiver-how-can-i-support-a-child-with-non-verbal-minimally-verbal-presentation-day-to-day
- Can a child with Non-Verbal / Minimally Verbal Presentation attend a mainstream school?: https://pinnacleblooms.org/ask/can-a-child-with-non-verbal-minimally-verbal-presentation-attend-a-mainstream-school
- Can a Non-Verbal or Minimally Verbal Child Attend a Regular School?: https://pinnacleblooms.org/ask/can-a-child-with-non-verbal-minimally-verbal-presentation-attend-a-regular-school
- Can a child with Non-Verbal / Minimally Verbal Presentation grow up to live independently?: https://pinnacleblooms.org/ask/can-a-child-with-non-verbal-minimally-verbal-presentation-grow-up-to-live-independently
- How a teacher can help a non-verbal or minimally verbal child learn: https://pinnacleblooms.org/ask/how-can-a-classroom-teacher-help-a-child-with-non-verbal-minimally-verbal-presentation-take-part-and-learn
- How a district early intervention programme can identify and support under-7s who are non-verbal or minimally verbal: https://pinnacleblooms.org/ask/how-can-a-district-early-intervention-programme-identify-and-support-children-under-7-with-non-verbal-minimally-verbal-presentation
- How a teacher can include a non-verbal or minimally verbal child: https://pinnacleblooms.org/ask/how-can-a-teacher-include-and-support-a-young-child-with-non-verbal-minimally-verbal-presentation-in-a-mainstream-classroom
- Supporting Communication in a Non-Verbal or Minimally Verbal Child: https://pinnacleblooms.org/ask/how-can-we-support-communication-development-in-a-child-with-non-verbal-minimally-verbal-presentation
- How therapy helps a non-verbal or minimally verbal child make progress: https://pinnacleblooms.org/ask/how-does-therapy-help-a-child-with-non-verbal-minimally-verbal-presentation-make-progress
- How Non-Verbal / Minimally Verbal Presentation Is Diagnosed: https://pinnacleblooms.org/ask/how-is-non-verbal-minimally-verbal-presentation-diagnosed-in-a-child
- How is a non-verbal or minimally verbal child supported through therapy?: https://pinnacleblooms.org/ask/how-is-non-verbal-minimally-verbal-presentation-supported-through-therapy
- AbilityScore 0–100 for a minimally verbal child: what to do next: https://pinnacleblooms.org/ask/my-child-with-non-verbal-minimally-verbal-presentation-has-an-abilityscore-of-0-100-what-should-we-do-next

### At home & in everyday life
- How can I support my child with Non-Verbal / Minimally Verbal Presentation at home?: https://pinnacleblooms.org/ask/how-can-i-support-my-child-with-non-verbal-minimally-verbal-presentation-at-home