Comparison of efficiency in key entry among young, middle and elderly age groups - Effects of aging and character size of a keyboard on work efficiency in an entry task

Atsuo Murata, Hitomi Nakamura, Yoshitomo Okada

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)


The study in the direction of establishing a basis for IT suitable for elderly users is necessary especially on the input devices. In this study, it has been investigated how the aging factor and the letter (character) size of a keyboard affects the usability in a text entry task. It was also investigate how the experience factors of computer use affected the efficiency for elderly computer users. The performance measures (entry speed and correctly entered number per min) of the young group doubled those of the middle and elderly groups. The effect of the alphabetic letter size on the performance was observed for the middle and elderly age groups of subjects who were classifies as a no-experience group. The young group and the middle and elderly group with experience of computer operation and utilization were robust to the size of alphabetic letters.

Original languageEnglish
Pages (from-to)96-101
Number of pages6
JournalProceedings of the IEEE International Conference on Systems, Man and Cybernetics
Publication statusPublished - Dec 1 2002
Externally publishedYes
Event2002 IEEE International Conference on Systems, Man and Cybernetics - Yasmine Hammamet, Tunisia
Duration: Oct 6 2002Oct 9 2002


  • Aging
  • Computer experience
  • Efficiency
  • Keyboard
  • Size of letter

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Hardware and Architecture

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