Related Experiment Video
Updated: Mar 7, 2026
08:09
Psychophysiological Assessment of the Effectiveness of Emotion Regulation Strategies in Childhood
Published on: February 11, 2017
12.3K
Does marital conflict predict infants' physiological regulation? A short-term prospective study
Christin L Porter1, W Justin Dyer2
1School of Family Life/Neuroscience Center, Brigham Young University.
Summary
Marital conflict impacts infant development, with girls showing reduced cardiac vagal tone. Infant development also influences marital conflict, affecting parent-child relationships.
Area of Science:
- Developmental Psychology
- Child Psychology
- Family Studies
Background:
- Previous research links marital conflict to child behavioral and emotional issues.
- Studies on marital discord's impact on children have largely focused on older age groups.
- Limited research explores the direct effects of marital functioning on infants.
Purpose of the Study:
- To examine the relationship between marital functioning (conflict and harmony) and infants' cardiac vagal tone and developmental status.
- To investigate these linkages across two time points in infancy using a cross-lag approach.
- To explore potential gender differences in these associations.
Main Methods:
- Cross-lag panel study design with two time points in infancy.
- Assessment of marital functioning (conflict and harmony).
- Measurement of infants' cardiac vagal tone and developmental status (Psychomotor Development Index and Mental Development Index).
Main Results:
- Concurrent links between marital harmony and vagal tone were found for both boys and girls at 6 months, and for boys at 12 months.
- Marital conflict at 6 months predicted lower cardiac vagal tone in girls at 12 months.
- Infant developmental status at 6 months predicted marital conflict at 12 months: higher Psychomotor Development Index scores predicted more conflict, while higher Mental Development Index scores predicted less conflict.
Conclusions:
- Findings support the emotional security hypothesis and spillover framework in early development.
- Infants' developmental status can influence marital dynamics.
- Differential susceptibilities highlight the importance of considering gender and developmental context in understanding these relationships.
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