Volume 51 Number 6, 2014
Pages 995 — 1012
Abstract — Single-switch scanning is a technique used by some individuals for spoken and/or written communication. We developed a method for adjusting the settings in a single-switch scanning interface to increase a user’s text entry rate (TER). We evaluated that method with nine individuals who use single-switch scanning to communicate. Text entry rates improved by an average of 120% (p = 0.003). All nine subjects increased their TER by at least 40%, and five of the nine increased their TER by over 100%. At baseline, TER averaged 1.42 words per minute (wpm), ranging from 0.28 to 2.92 wpm. With the revised settings, TER averaged 2.72 wpm and ranged from 1.12 to 6.51 wpm.
Key words: alternative communication, assistive device, assistive technology, augmentative communication, computer access, physical impairment, single-switch scanning, switch access, text entry, user performance.
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Last Reviewed or Updated Wednesday, October 15, 2014 10:17 AM