Study on the effects of cognitive characteristics on reading and spelling fluency in adults with developmental dyslexia

2023 Fiscal Year Final Research Report

• Project/Area Number: 21K20294
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Multi-year Fund
• Review Section: 0110:Psychology and related fields
• Research Institution: Aichi Shukutoku University
• Principal Investigator: Akashi Noriko 愛知淑徳大学, 人間情報学部, 助教 (10908148)
• Project Period (FY): 2021-08-30 – 2024-03-31
• Keywords: 発達性読み書き障害 / 成人 / 書字流暢性 / 認知能力 / 主観的困難度

Outline of Final Research Achievements

The term "developmental dyslexia" refers to a disorder that causes difficulties in reading and writing in spite of the absence of general intellectual developmental delay. This study focused on the writing speed of adults with developmental dyslexia, examining the extent to which they write more slowly than adults without the disorder, and what factors contribute to their slowness. Furthermore, we investigated the degree of subjective difficulty with keyboard typing and flick keyboard typing, which are alternatives to handwriting, and found that adults with developmental dyslexia have relatively low difficulty with flick keyboard typing, and that the degree of difficulty with keyboard typing varies depending on individual cognitive characteristics. The results of this study provide clues to effective support methods for adults with developmental dyslexia.

Free Research Field

行動科学

Academic Significance and Societal Importance of the Research Achievements

発達性読み書き障害のある成人にとって，書字の遅さは幼少期から継続的に抱えている困難であり，就学・就労に支障をきたす原因となる場合がある。しかし困難の程度に対する定量的研究は少なく，支援方法の根拠となる科学的知見が不足している。本研究は発達性読み書き障害のある成人が障害のない成人と比べ，ひらがな単語の水準で有意に書字が遅いことを明らかにした。背景には音韻能力や視覚認知能力の問題があると考えられ，発達性読み書き障害のある成人が書字に関する合理的配慮を求めるにあたり, 根拠の一つになり得る知見が得られた。