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Updated: Mar 1, 2026

P50 Sensory Gating in Infants
Published on: December 26, 2013
Physiological functioning moderates infants' sensory sensitivity in higher conflict families
Micah A Mammen1, Alex Busuito1, Ginger A Moore1
1The Pennsylvania State University, University Park, Pennsylvania.
Parental conflict during infancy may heighten children's sensitivity to sensory stimuli. This effect is more pronounced in infants with higher physiological arousal and lower self-regulation capabilities.
Area of Science:
- Developmental Psychology
- Child Psychology
- Infant Behavior
Background:
- Exposure to parental conflict is linked to emotional and behavioral issues in children.
- Infants may develop heightened sensitivity to environmental conflict cues.
- Understanding early precursors to negative child outcomes is crucial.
Purpose of the Study:
- To investigate the relationship between parental conflict and infants' behavioral sensitivity to general sensory stimuli.
- To explore whether autonomic arousal and regulation moderate this association.
- To identify potential early markers for children at risk due to family environment.
Main Methods:
- Examined 36 infants (23-42 weeks) and their parents.
- Measured infant baseline skin conductance (SC) and respiratory sinus arrhythmia (RSA) for autonomic arousal and regulation.
- Collected parent reports on levels of parental conflict and infant behavioral sensory sensitivity.
Main Results:
- Parental conflict was associated with increased behavioral sensitivity to sensory stimuli in infants.
- This association was stronger in infants exhibiting higher physiological arousal (higher SC).
- Infants with lower physiological regulation capacity (lower RSA) showed a stronger link between parental conflict and sensory sensitivity.
Conclusions:
- Infant exposure to parental conflict may lead to heightened sensitivity to environmental stimuli.
- This increased sensitivity appears contingent on the infant's baseline physiological arousal and regulatory capacity.
- Findings suggest a potential pathway from early family environment to later sensory processing and behavioral outcomes.
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