Characteristics of shifting ability in children with mild intellectual disabilities: an experimental study with a task-switching paradigm

Y. Kitamura, Y. Okumura, Y. Shirakawa, Y. Ikeda, Y. Kita

研究成果: Article査読

抄録

Background: Shifting enables flexible switch between tasks or mental sets. It is a component of the executive function that plays critical roles in human behaviour control. However, shifting ability in individuals with intellectual disability (ID) has not been well clarified because of the use of intellectually demanding tasks in previous studies. The present study invented a novel shifting task with minimal intellectual demands and aimed to clarify the characteristics of shifting in adolescents with ID. Methods: Adolescents with ID (n = 21) and chronological-age-matched (n = 10) and mental-age-matched controls (n = 33) performed a novel shifting task with simple rule switching (i.e. change in direction). Analyses focused on the switch cost or the increase in the reaction time associated with rule switching. Results: Two subtypes of adolescents with ID were found with respect to the switch cost: one that lacks it and another with an increased switch cost. The lack of a switch cost was unique to the subgroup adolescents with ID and was not indicated in the control group. Conclusions: The present study indicated that shifting in adolescents with ID does not depend solely on their intellectual function and is highly heterogeneous. This finding further implies that executive functions, including shifting, must be evaluated separately from their intellectual functions.

本文言語English
ページ(範囲)853-864
ページ数12
ジャーナルJournal of Intellectual Disability Research
66
11
DOI
出版ステータスPublished - 2022 11月

ASJC Scopus subject areas

  • リハビリテーション
  • 人文科学(その他)
  • 神経学
  • 臨床神経学
  • 精神医学および精神衛生

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