Executive functions in children aged 6 to 13: a dimensional and developmental study

Area of Science:

• Child Psychology
• Neurodevelopmental Science
• Cognitive Psychology

Background:

• Executive functioning is crucial for cognitive and behavioral regulation in children.
• Understanding the developmental trajectory of executive functions is essential for identifying potential developmental delays or disorders.

Purpose of the Study:

• To investigate the underlying dimensions of executive functioning in children aged 6 to 13 years.
• To examine age- and sex-related differences in these executive function dimensions.
• To relate findings to established developmental frameworks of executive functions.

Main Methods:

• Cross-sectional study with 92 children (ages 6-13).
• Utilized a battery of tasks assessing go/no-go, verbal fluency, continuous performance, Stroop-like, hand movements, and digit span.
• Factor analysis was employed to determine the dimensionality of executive functioning.

Main Results:

• Three distinct dimensions of executive functioning were identified: Disinhibition, Speed/arousal, and Working memory/Fluency.
• Significant age-dependent changes were observed across all three dimensions, with key maturation periods at 6-8, 9-12, and early adolescence.
• Sex differences were noted only for the Speed/arousal dimension.

Conclusions:

• Executive functioning in children is multidimensional, evolving through distinct developmental stages.
• Inhibition and the interplay between inhibition and working memory are critical components in executive function development.
• The findings support existing developmental models, highlighting specific processes rather than general executive function maturation.