Structure of executive functions in typically developing kindergarteners

Area of Science:

• Developmental psychology
• Cognitive neuroscience

Background:

• Executive functions (EFs) are crucial cognitive processes.
• Adult EF structure is understood as working memory, inhibition, and flexibility.
• EF structure in children remains less understood, prompting further research.

Purpose of the Study:

• To investigate the structural model of executive functions in typically developing kindergarteners.
• To address limitations in previous research, including the absence of confirmatory factor analysis (CFA) and insufficient EF components.
• To examine the differentiation of EFs during early development.

Main Methods:

• A large sample of 272 typically developing kindergarteners participated.
• Confirmatory factor analysis (CFA) was used to test structural models of EFs.
• A comprehensive battery of EF tasks measured working memory, flexibility, and inhibition.

Main Results:

• The best-fitting structural model comprised two factors: inhibition and working memory-flexibility.
• Invariance analyses confirmed this two-factor structure is consistent between boys and girls.
• No significant differences in latent variable means were found based on sex.

Conclusions:

• The findings support the hypothesis of executive function differentiation during childhood development.
• The study provides evidence for a two-factor model of EFs in young children.
• Further research is suggested regarding the neurophysiological development of EFs.