Evidence for neurobehavioral risk phenotypes at birth

Area of Science:

• Neuroscience
• Developmental Psychology
• Pediatrics

Background:

• Newborn behavior offers insights into neurodevelopmental organization independent of the postnatal environment.
• The Neonatal Network Neurobehavioral Scale (NNNS) was developed to assess prenatal substance exposure effects.
• 156 empirical articles have utilized the NNNS since its inception.

Purpose of the Study:

• To review and summarize empirical studies using the NNNS.
• To support the replicability of newborn neurobehavioral phenotypes.
• To highlight the clinical utility of the NNNS for early identification of neurodevelopmental risk.

Main Methods:

• Compilation and aggregation of Z-scores from published NNNS studies.
• Analysis of data across diverse infant populations, including those with prenatal substance exposure and preterm infants.
• Review of independent samples and research groups to ensure robustness of findings.

Main Results:

• Replicable evidence for three newborn neurobehavioral phenotypes: one typical and two indicative of later delay (hyper- and hypo-dysregulated).
• These phenotypes were consistently identified across various populations and research groups.
• Demonstrated reliability and validity of newborn neurobehavioral measurement at birth.

Conclusions:

• Newborn neurobehavioral phenotypes identified at birth can reliably predict neurodevelopmental challenges.
• Early identification of risk phenotypes using the NNNS has significant clinical utility.
• Intervention for infants with identified risk phenotypes may prevent later neurodevelopmental delay due to high neuroplasticity.