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A comparison of two computer input devices for uppercase letter matching
1Occupational Therapy Division, University of Washington, Seattle, USA.
Summary
A 9-year-old boy with cerebral palsy found a mouse with an enlarged cursor more effective for an on-screen letter-matching task. This simple adjustment improved accuracy and efficiency, highlighting the importance of accessible technology design.
Area of Science:
- Assistive Technology Research
- Human-Computer Interaction
- Pediatric Rehabilitation
Background:
- Children with spastic quadriplegic cerebral palsy often have visual and cognitive deficits impacting computer use.
- Evaluating the effectiveness of different input devices is crucial for enhancing accessibility.
Observation:
- A single-subject research design was employed to compare a Touch Window and a mouse with an enlarged on-screen arrow.
- Performance was measured by correct letter matches per session, accuracy per letter, and time to match five consecutive letters.
Findings:
- The mouse interface increased accuracy for 69% of alphabet letters and improved the trend of correct matches.
- While the Touch Window was faster for consecutive matches, the mouse demonstrated greater overall effectiveness.
- Letter matching remained a slow process regardless of the interface used.
Implications:
- Enlarging on-screen elements, like mouse cursors, can significantly improve computer accessibility for individuals with disabilities.
- Simple modifications to standard computer equipment can enhance usability and participation for children with cerebral palsy.
- This study underscores the need for tailored assistive technology solutions in educational and therapeutic settings.