The Relationship between Executive Functions, Working Memory, and Intelligence in Kindergarten Children.

Area of Science:

• Cognitive psychology
• Developmental psychology
• Neuroscience

Background:

• Executive functions (EF), working memory (WM), and intelligence are distinct but related cognitive constructs.
• The underlying mechanisms linking these constructs in childhood remain unclear.
• Investigating metacognitive processes within EF may illuminate these associations.

Purpose of the Study:

• To examine the role of metacognitive processes, specifically post-error slowing (PES) in EF, in the relationship between EF, WM, and intelligence in young children.
• To determine if metacognitive aspects of EF mediate the associations between EF, WM, and intelligence.

Main Methods:

• A pre-registered study involving kindergarten children (mean age 6.4 years).
• Children completed tasks assessing EF (including inhibition and PES), verbal and visuospatial WM, and fluid intelligence.
• Traditional accuracy and reaction time measures for EF were also collected.

Main Results:

• Inhibition, a component of EF, showed significant associations with fluid intelligence and verbal WM.
• Verbal WM was also significantly associated with intelligence.
• Post-error slowing (PES) in EF did not show significant associations with either intelligence or WM.

Conclusions:

• Inhibition, rather than metacognitive processes like PES, appears to be a key factor underlying the associations between EF, WM, and intelligence in kindergarteners.
• These findings suggest that specific components of EF, like inhibition, play a crucial role in early cognitive development and the interplay between memory and intelligence.