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Effectiveness and usability of Scanning Wizard software: a tool for enhancing switch scanning.

Heidi Horstmann Koester1, Richard C Simpson2

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Summary

Scanning Wizard software enhances switch scanning systems for individuals with severe physical impairments. This tool significantly improved text entry rates by an average of 71%, aiding communication accessibility.

Keywords:
Augmentative communicationcomputer accessphysical impairmentswitch accessswitch scanningtext entryuser performance

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Area of Science:

  • Assistive Technology
  • Rehabilitation Engineering
  • Human-Computer Interaction

Background:

  • Individuals with severe physical impairments often rely on switch scanning for communication.
  • Optimizing switch and scanning system configuration is crucial for effective communication.
  • Existing methods for system setup can be time-consuming and require expertise.

Purpose of the Study:

  • To evaluate the effectiveness and usability of Scanning Wizard software.
  • To determine if Scanning Wizard can improve text entry rates for switch scanning users.
  • To assess the software's utility in optimizing scanning system configurations.

Main Methods:

  • Ten individuals who use switch scanning and ten practitioners participated.
  • Participants used Scanning Wizard to configure their scanning systems.
  • Usability was assessed via surveys and qualitative feedback.
  • Text entry rates were measured before and after using Scanning Wizard recommendations.

Main Results:

  • Usability ratings were high, averaging over 4.5 out of 5.
  • Qualitative feedback from users and practitioners was very positive.
  • Five switch users completed the protocol, implementing recommended settings.
  • Text entry rates improved by an average of 71% (range: 29%–172%) with revised settings.

Conclusions:

  • Scanning Wizard is a highly usable tool for configuring switch scanning systems.
  • The software effectively improves text entry rates for individuals using switch scanning.
  • Scanning Wizard offers a valuable solution for enhancing communication accessibility for users with severe physical impairments.