Long-term associations between early-life family functioning and preadolescent white matter microstructure

Area of Science:

• Neuroscience
• Developmental Psychology
• Pediatrics

Background:

• Childhood behavior problems have complex, poorly understood causes.
• Family environments and brain development are implicated in behavior problem risk.
• Limited research exists on white matter pathways linking family environment to behavior.

Purpose of the Study:

• To investigate the association between family functioning and white matter neurodevelopment in preadolescence.
• To test if positive prenatal and mid-childhood family functioning correlate with fractional anisotropy (FA) and mean diffusivity (MD).

Main Methods:

• Utilized data from 2727 families in the Generation R Study.
• Assessed family functioning prenatally and in mid-childhood using the McMaster Family Assessment Device.
• Collected diffusion-weighted MRI scans in preadolescence to measure global FA and MD from 27 white matter tracts.

Main Results:

• Prenatal family functioning, but not mid-childhood functioning, was associated with higher global FA (β=0.11) and lower global MD (β=-0.15).
• These associations remained significant in fully adjusted models.
• Sensitivity and tract-specific analyses supported the global findings.

Conclusions:

• High-functioning prenatal family environments may offer lasting white matter neurodevelopmental advantages.
• These benefits extend into preadolescence, potentially influencing behavior.
• Early family environment plays a crucial role in neurodevelopmental trajectories.