CPACC Physical and Motor Disabilities

Question 1

Which of the following is an assistive technology MOST commonly used by individuals with limited fine motor control who cannot use a standard mouse?

Accepted Answer

Switch access device

Answer

Switch access devices allow users with severely limited motor control — such as those with ALS, spinal cord injury, or cerebral palsy — to control a computer using one or more switches activated by any voluntary movement (breath, head turn, eye blink). Screen magnifiers serve low-vision users, TTS serves blind users, and captions serve deaf users.

Question 2

A web designer wants to ensure that a form is accessible to users with motor disabilities who navigate exclusively by keyboard. Which of the following is the MOST critical design requirement?

Accepted Answer

All interactive elements must be reachable and operable using the Tab key and keyboard commands alone

Answer

Full keyboard operability is the foundational requirement for users who cannot use a mouse or touchscreen. This is codified in WCAG Principle 2 (Operable) and specifically in Success Criterion 2.1.1 (Keyboard). While large touch targets help with motor accessibility on mobile, keyboard operability is the universal baseline for motor disability accommodation on the web.

Question 3

Tremor, reduced grip strength, and limited range of motion are functional limitations most associated with which disability category?

Accepted Answer

Physical and motor disabilities

Answer

Tremor, grip weakness, and limited range of motion are hallmark physical/motor limitations that affect how users interact with input devices. They are common in conditions such as Parkinson's disease, multiple sclerosis, arthritis, and spinal cord injuries. These functional limitations inform accessible design requirements for input mechanisms.

Question 4

Eye-tracking technology as an assistive input method is PRIMARILY beneficial for users who:

Accepted Answer

Have severe motor disabilities that prevent them from using any limb for input

Answer

Eye-tracking allows users to control a computer using only their eye movements, making it essential for individuals with conditions like ALS (late stage), locked-in syndrome, or high-level spinal cord injury who have lost voluntary limb control but retain eye movement. It is an input technology for severe motor disability, not a visual or cognitive accommodation.

Question 5

Which WCAG success criterion directly addresses the needs of users with motor disabilities who may accidentally activate controls due to tremor?

Accepted Answer

2.5.2 Pointer Cancellation

Answer

WCAG 2.5.2 Pointer Cancellation requires that single-pointer operations (clicks/taps) can be cancelled or reversed before completing, so that accidental activations due to tremor or motor imprecision can be undone. This SC was specifically added in WCAG 2.1 to address motor disability needs during pointer interaction.

CPACC - Certified Professional in Accessibility Core Competencies Practice Test

CPACC - Certified Professional in Accessibility Core Competencies Practice Test

CPACC Physical and Motor Disabilities