Journal
JOURNAL OF EXPERIMENTAL CHILD PSYCHOLOGY
Volume 140, Issue -, Pages 158-170Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jecp.2015.07.003
Keywords
Mother-infant interaction; Dyadic reparation; Social stress; Still-Face paradigm; Respiratory sinus arrhythmia; Vagal tone suppression
Funding
- Italian Health Ministry
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Infants' social stress regulation (i.e., reactivity and recovery) might be affected by mother-infant dyadic functioning and infants' vagal tone (i.e., respiratory sinus arrhythmia, RSA). This study investigated the role of a specific dyadic functioning feature (i.e., dyadic reparation) and individual differences in vagal tone regulation (i.e., RSA suppression vs. non-suppression) in relation to social stress regulation in 4-month-old infants. A total of 65 mother-infant dyads participated in the face-to-face still-face paradigm. Social stress reactivity and recovery were measured as negative emotionality during Still-Face and Reunion episodes, respectively. RSA was measured during Play, Still-Face, and Reunion episodes. Suppressors had higher dyadic reparation during Play and higher recovery from social stress compared with non-suppressors. Higher reparation during Play was associated with lower reactivity and higher recovery only for suppressors. Findings suggest a joint role of infants' RSA individual differences and dyadic reparation in affecting infants' social stress regulation at 4 months of age. (C) 2015 Elsevier Inc. All rights reserved.
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