Linking executive function skills and physiological challenge response: Piecewise growth curve modeling

Area of Science:

• Developmental psychology
• Cognitive neuroscience
• Psychophysiology

Background:

• Executive function (EF) is crucial for self-regulation in children.
• Physiological responses, such as respiratory sinus arrhythmia (RSA), reflect stress and arousal.
• Understanding the interplay between EF and physiological recovery is vital for child development.

Purpose of the Study:

• To investigate the relationship between children's executive function (EF) skills and their physiological response trajectory.
• To examine how different components of EF (cool and hot) relate to initial arousal, reactivity, and recovery of RSA.
• To determine if EF skills predict the dynamics of physiological recovery following a challenge.

Main Methods:

• Piecewise growth curve modeling was used to analyze RSA changes.
• 102 ethnically diverse kindergartners participated.
• EF skills were assessed using standard tasks and observer ratings; RSA was measured during a socio-cognitive challenge.

Main Results:

• Both cool and hot EF skills were differentially associated with linear and quadratic components of RSA response.
• Higher hot EF skills correlated with faster RSA recovery post-challenge.
• Assessor-reported EF skills during the lab visit also predicted quicker RSA recovery.

Conclusions:

• Children's physiological response is a dynamic process involving arousal, reactivity, and recovery.
• Executive function, particularly hot EF, is linked to the recovery phase of physiological responses.
• These findings underscore the connection between self-regulation abilities and physiological self-soothing in children.