Canonical ID: motor-impairment-tremor · Category: Accessibility Personas · Since: v12.0.0

See: Persona-MotorTremor for the full documentation page.

This page documents the motor-impairment-tremor persona ID as used in the CLI and MCP tools. The full persona documentation is maintained at Persona-MotorTremor.

Quick Reference

Description: User with essential tremor affecting fine motor control. Cursor jitter and misclicks are primary barriers to computer use.

Cognitive Profile

Trait	Value	Meaning
patience	0.60	Moderate; accustomed to slower, deliberate interaction
riskTolerance	0.40	Low-medium; avoids risky clicks on small targets
comprehension	0.70	Normal cognitive function
persistence	0.70	High; determined to complete tasks despite motor difficulty
curiosity	0.40	Low-medium; explores cautiously
workingMemory	0.70	Normal capacity
readingTendency	0.60	Moderate; reads content thoroughly
resilience	0.60	Moderate; adapted to motor challenges
selfEfficacy	0.50	Medium; maintains confidence through adapted strategies
siteFamiliarity	0.50	Medium; regular user with motor challenges

Key Behaviors

Careful, deliberate clicking to compensate for tremor-induced jitter
Avoids small targets and hover-dependent interactions
Prefers keyboard navigation when available
Uses large buttons and padded click areas
Stabilizes arm against surfaces for precision tasks

When to Use

Use this persona when testing:

Click target sizing and spacing (minimum 44x44px)
Hover-dependent UI patterns (dropdowns, tooltips)
Drag-and-drop interactions and alternatives
Keyboard navigation completeness
Form input field sizing and error tolerance

Usage

npx cbrowser cognitive-journey --persona motor-impairment-tremor --start https://example.com --goal "complete form submission"

await cognitive_journey_init({
  persona: "motor-impairment-tremor",
  goal: "complete form submission",
  startUrl: "https://example.com"
});

Research Basis

Essential tremor prevalence 0.4-5.6% (npj Digital Medicine, 2019). SteadyMouse and anti-tremor tools filter 1-15Hz tremor frequencies. Cursor jitter and misclicks are the primary documented barriers to computer use.

Trewin, S., & Pain, H. (1999). Keyboard and mouse errors due to motor disabilities. International Journal of Human-Computer Studies, 50(2), 109-144.
Lorig, K. R., Ritter, P., Stewart, A. L., et al. (2001). Chronic Disease Self-Management Program. Medical Care, 39(11), 1217-1223. Self-efficacy in adapted users.

Persona-MotorTremor - Full documentation
Persona-Index - All personas
empathy_audit - Run empathy audit with this persona
cognitive_journey_init - Start a cognitive journey

Copyright: (c) 2026 Alexa Eden.

License: MIT License

Contact: [email protected]

Persona MotorImpairmentTremor