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. 2024 Nov-Dec;33(6):e2545.
doi: 10.1002/icd.2545. Epub 2024 Oct 1.

Maternal Sensitivity as a Predictor of Change in Respiratory Sinus Arrhythmia Activity From Infancy to Toddlerhood

Tracey Tacana  1 , Bailey Speck  1 , Jennifer Isenhour  1 , Elisabeth Conradt  2 , Sheila E Crowell  3 , K Lee Raby  1
Affiliations

Maternal Sensitivity as a Predictor of Change in Respiratory Sinus Arrhythmia Activity From Infancy to Toddlerhood

Tracey Tacana et al. Infant Child Dev. 2024 Nov-Dec.

Abstract

This study examined whether parental sensitivity during distressing and non-distressing mother-infant interactions predicts changes in young children's respiratory sinus arrhythmia (RSA) activity. Baseline RSA levels were collected from 83 children (49% female, 51% male) when children were 7 and 18 months old. Children's RSA reactivity and RSA recovery during the Still-Face paradigm were collected when children were 7 months and during the Strange Situation procedure at 18 months. Controlling for stability of RSA activity over time, maternal sensitivity during distressing interactions at 7 months predicted changes in children's baseline RSA levels (β = -.30) and children's RSA recovery (β = .25). Young children who experienced higher levels of sensitivity at 7 months had lower resting RSA levels and exhibited greater RSA recovery at 18 months. These results suggest that changes in young children's RSA activity are meaningfully related to their early caregiving experiences.

Keywords: Still-Face paradigm; Strange Situation procedure; maternal sensitivity; respiratory sinus arrhythmia.

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