Aging Effects of Inner Character Space and Line Space of Japanese Language

  • Nana ItohEmail author
  • Ken Sagawa
Conference paper
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 826)


This study used Japanese sentences to investigate how inner character space, line space, and reader age differences affect readability. Results can suggest good layout of sentences for older adults. Japanese sentence experiments revealed that adequate inner character, line space, and number of characters provide good readability.


Age Inner character space Line space Readability 


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    Sagawa K, Itoh N (2006) Legible font size of a Japanese single character for older people. In: Proceedings of the IEA 2006. CD-ROMGoogle Scholar

Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.National Institute of Advanced Industrial Science and Technology (AIST)TsukubaJapan

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