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Early experience in humans is associated with changes in neuropeptides critical for regulating social behavior

Alison B Wismer Fries1, Toni E Ziegler, Joseph R Kurian

  • 1Department of Psychology, University of Wisconsin, 1202 West Johnson Street, Madison, WI 53706-1696, USA.

Proceedings of the National Academy of Sciences of the United States of America
|November 24, 2005
PubMed

Insights

Early social deprivation impacts brain systems crucial for social bonding and emotional regulation. Aberrant caregiving in children affects vasopressin and oxytocin systems, explaining social and emotional difficulties.

Area of Science:

  • Neuroscience
  • Developmental Psychology
  • Behavioral Biology

Background:

  • Social attachments are fundamental to human relationships, starting from infancy and providing emotional regulation throughout life.
  • Studying the interplay of social experience and biological development in children is challenging due to simultaneous brain maturation and social learning.
  • Aberrant early social environments offer a unique 'experiment in nature' to investigate the impact of caregiving deprivation on social behavior.

Purpose of the Study:

  • To investigate the role of early social experience on the brain systems governing emotional behavior.
  • To examine how extreme social deprivation affects the neurobiological underpinnings of social bonding and emotional regulation.
  • To identify potential mechanisms linking atypical early caregiving to social and emotional deficits.

Main Methods:

  • Utilized a natural experiment involving children raised in severely deprived social environments.
  • Analyzed the impact of early social experience on neurobiological systems, specifically the vasopressin and oxytocin neuropeptide systems.
  • Correlated observed social and emotional behaviors with neurobiological findings.

Main Results:

  • Early social experience significantly affects the vasopressin and oxytocin neuropeptide systems.
  • These neuropeptide systems are critical for establishing social bonds and regulating emotional behaviors.
  • Atypical function in these systems, influenced by early social deprivation, is linked to social and emotional difficulties.

Conclusions:

  • Early life experiences play a critical role in shaping the brain systems essential for fundamental human social behavior.
  • The vasopressin and oxytocin systems are key mediators of early social experience's impact on social and emotional development.
  • Findings suggest a neurobiological mechanism for the social and emotional challenges seen in individuals with histories of aberrant caregiving.

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