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Assessment and Evaluation of the High Risk Neonate: The NICU Network Neurobehavioral Scale
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Evidence for neurobehavioral risk phenotypes at birth.

Elisabeth Conradt1, Edward Tronick2, Barry M Lester3,4

  • 1Duke University School of Medicine, Department of Psychiatry and Behavioral Sciences, Durham, NC, USA. Liz.Conradt@Duke.edu.

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Newborn behavior assessment using the Neonatal Network Neurobehavioral Scale (NNNS) identifies reliable neurobehavioral phenotypes. These early markers predict later cognitive and behavioral development, enabling timely interventions for at-risk infants.

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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.