# NTR - Neurocognitive Transfer Risk

- Artifact: PictoClarity metric reference
- Canonical HTML URL: https://pictoclarity.com/framework/metrics/ntr/
- Markdown URL: https://pictoclarity.com/md/framework/metrics/ntr/
- Language: en
- Category: Foundational metric

## Summary

A risk score for fragile AAC-style object-to-action transfer across cognitive profiles.

## Definition

NTR measures how fragile the transfer is from visible referent to intended action, using AAC-informed pictogram reading rules. This transfer is a baseline requirement for every symbolic communication artifact. Public signage, AAC communication, safety, and packaging contexts apply the strictest cap when transfer is weak.

## Formula Structure

`NTR = aac_risk(visible_form, intended_action, context_inference, support)`

This public formula describes structure, not private calibration.

## What It Reads

- Whether a user can move from seeing the object to understanding the action.
- How abstract, legacy, indirect, or convention-heavy the mapping is.
- Whether labels or contextual cues are needed for safer communication.

## High Reading

A high NTR means recognition of the visible object does not reliably produce the intended action meaning.

## Low Reading

A low NTR means the visible referent, action mapping, and support cues make transfer more direct before signage or interface context does extra work.

## Limits

- NTR estimates transfer risk; it does not diagnose users.
- NTR does not replace AAC specialist review or user testing.
- NTR depends on the submitted context and expected user group.

## Examples

- A storage object used as an interface action can have high NTR when the action depends on learned convention.
- A concrete object with a visible, direct action cue can reduce NTR.

## Related Metrics

- PCS
- STS
- CLL
- CBB
- CTS

## Citation Guidance

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