Resting-state functional network connectivity underlying conscientiousness in school-aged children.

Area of Science:

• Neuroscience
• Developmental Psychology
• Cognitive Science

Background:

• Conscientiousness, a key personality trait, develops significantly during childhood and adolescence.
• The neural underpinnings of conscientiousness development in children remain largely unexplored.
• Understanding these mechanisms is vital for insights into personality development.

Purpose of the Study:

• To investigate the relationship between resting-state functional network connectivity (rsFNC) and conscientiousness in school-aged children.
• To identify specific brain networks associated with variations in conscientiousness.
• To explore the potential hub role of the fronto-parietal network (FPN) in children's conscientiousness.

Main Methods:

• Utilized resting-state functional magnetic resonance imaging (fMRI) on 69 children (mean age 10.12 years).
• Employed a whole-brain region-of-interest (ROI)-based analysis to examine rsFNC.
• Analyzed connectivity patterns between the FPN and other major brain networks.

Main Results:

• Positive associations found between conscientiousness and rsFNC of the FPN with the somatosensory motor-hand network (SMHN) and auditory network (AN).
• Negative associations observed between conscientiousness and rsFNC of the FPN with the salience network (SN) and default mode network (DMN).
• The FPN demonstrated a potential hub role in the neural correlates of children's conscientiousness.

Conclusions:

• Intrinsic brain networks, especially those supporting higher-order cognition, significantly influence children's conscientiousness.
• The FPN plays a pivotal role in the development of personality traits during childhood.
• This study provides novel insights into the neural mechanisms underlying personality development in children.