# Child Effortful Control Moderates the Link Between Parenting Stress and Child Parasympathetic Regulation: Interactions Across Contexts and Measures

## TL;DR

This study shows how a child's ability to control their behavior can influence the relationship between parenting stress and the child's physiological self-regulation, depending on the context.

## Contribution

The study introduces new insights into how different measures of child effortful control interact with parenting stress and parasympathetic regulation across contexts.

## Key findings

- Parent-reported effortful control only moderated the parenting stress-RSA link in the parent–child context.
- Task-assessed effortful control showed moderation effects in both child and parent–child contexts.
- The effect of parenting stress on RSA varied across contexts when using task-assessed effortful control.

## Abstract

Parenting stress—psychosocial challenges from the parental role—is strongly tied to children's self‐regulatory abilities. Although cognitive and physiological facets of self‐regulation are integrated, research on parenting stress and children's parasympathetic activity is virtually absent. Additionally, few studies have examined changes in children's parasympathetic regulation across settings with and without a parent present. This study examined whether parenting stress is differentially associated with children's parasympathetic activity, indexed by respiratory sinus arrhythmia (RSA), as a function of their effortful control (EC). We tested whether interactions varied across EC measures (parent‐reported vs. task‐assessed) and the context of children's physiology assessment (child vs. parent–child). Parents (N = 67, M = 38.01 years) and children (N = 70, M = 51.41 months) provided data during a 2‐h lab visit. Results showed that parent‐reported EC moderated the association only in the parent–child context, whereas the task‐assessed EC moderation effect was present in both contexts. However, the effect of parenting stress on child RSA at levels of task‐assessed EC differed across contexts. Parallels in patterns of findings are discussed with reference to ecological affinity and whether a similar adaptive process emerges when both cognitive and physiological self‐regulation are assessed under comparable contextual demands.