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Affective facial expression processing in young children who have experienced maltreatment during the first year of

W John Curtis1, Dante Cicchetti

  • 1Department of Psychology, University of Kentucky, 207C Kastle Hall, Lexington, KY 40506, USA. john.curtis@uky.edu

Development and Psychopathology
|June 22, 2013
PubMed

Insights

Early childhood maltreatment alters brain responses to facial emotions. Maltreated children show distinct neural patterns when processing angry and happy expressions, highlighting the impact of early adversity on emotion identification.

Area of Science:

  • Neuroscience
  • Developmental Psychology
  • Child Psychiatry

Background:

  • Facial affect processing is crucial for social interaction.
  • Early life stress, such as child maltreatment, can impact neurodevelopment.
  • Understanding neural differences in emotion processing is key for early intervention.

Purpose of the Study:

  • To investigate neural correlates of facial affect processing in maltreated versus nonmaltreated 42-month-old children.
  • To identify differences in event-related potentials (ERPs) associated with viewing angry, happy, and neutral facial expressions.
  • To examine how early maltreatment experiences shape emotion identification pathways.

Main Methods:

  • Employed event-related potentials (ERPs) to measure brain activity.
  • Analyzed ERP components (P1, N170, P400, N150, P240, Nc, PSW) in response to facial affect.
  • Compared neural responses between a group of 46 maltreated and 25 nonmaltreated children.

Main Results:

  • Maltreated children showed heightened P1 and P400 amplitudes to angry faces.
  • Differential N170 responses to happy vs. angry faces were observed in maltreated children.
  • Distinct P240 and PSW amplitudes to angry and happy expressions were found between maltreated and nonmaltreated groups.

Conclusions:

  • Early maltreatment significantly alters neural processing of facial emotions.
  • These findings support the hypothesis that adverse early experiences impact emotion identification systems.
  • Results underscore the importance of early emotion-focused interventions for maltreated children.

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