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Unity or Diversity in Executive Functions: Examining the Three-Factor Model in Young Children
Executive functions (EFs) as a set of cognitive processes play a crucial role in developing children's higher mental functions andacademic success. Regardless of the number of studies conducted on EFs, current findings on the structure of cognitive functionsas a whole or multifaceted construct are mixed. This study aims to evaluate and compare the latent factor structure of EFs inpreschool-aged children (5–7 years) and school-aged children (7–9 years) to identify this structure across two age groups. Thestudy involved 500 children divided into four age groups: senior kindergarten groups, preparatory kindergarten groups, firstgrade groups, and second grade groups. The participants were assessed using the NEPSY-II neuropsychological battery andthe Dimensional Change Card Sort task. The results revealed that a three-factor model of EFs, comprising inhibitory control,working memory, and cognitive flexibility, best fits the data across all age groups. This suggests an earlier differentiation of EFscomponents, starting at the age of 5, which contradicts some previous studies proposing one- or two-factor structures in pre-school age. Correlation analysis showed statistically moderate relationships between EFs components, which weakened by thesecond grade, potentially indicating stabilization in EFs development during early school years. The findings support the unityand diversity model of EFs and emphasize the importance of conducting longitudinal research to clarify the factors influencingEFs development over time.