Performance of disabled persons on a chordic keyboard

A. Kirschenbaum, Z. Friedman, A. Melnik

Research output: Contribution to journalArticlepeer-review


Fourteen disabled persons used a one-hand chordic device for typing. This keyboard was designed to minimize physical exertion and to inhibit unwanted psychomotor reactions so as to facilitate its use by persons with cerebral palsy, muscular dystrophy, and related disorders. The keyboard fits the fingers of one hand. A character is typed by pressing a combination of fingers corresponding to a typing code developed earlier. Typing rates of text transcription ranged from 8 to 14 words/min after 5 h of practice. These results indicated that the physical configuration and cognitive operation of a chordic keyboard would permit disabled persons to use computers.

Original languageEnglish
Pages (from-to)187-194
Number of pages8
JournalHuman Factors
Issue number2
StatePublished - 1986
Externally publishedYes

ASJC Scopus subject areas

  • Human Factors and Ergonomics
  • Applied Psychology
  • Behavioral Neuroscience


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