Respiratory sinus arrhythmia (RSA) has been extensively investigated as a marker of adaptive emotional functioning in both children and adults, with studies linking RSA to temperamental dimensions such as positive affect and extraversion. However, few studies have examined the extent to which relations between RSA and temperament characteristics vary across ethnicity in childhood. We examined relations between respiratory sinus arrhythmia (RSA) and temperament dimensions (Activity Level, Task Orientation, and Affect-Extraversion) and the moderating role of ethnicity among preschoolers. Chinese- American (n = 28, Mage = 54.30 months) and European American (n = 32, Mage = 50.41 months) preschoolers were assessed for their temperament and RSA. Findings indicated higher levels of Affect-Extraversion among European American children. Ethnicity moderated the association between the baseline RSA and the Affect-Extraversion dimension of temperament, with a significant positive association found only for European American children. More research is needed to examine the effects of social-cultural experiences on the relation between children's affective regulation and autonomic functioning development.

中文翻译：

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种族调节了学龄前儿童自主功能与气质之间的联系。

呼吸性窦性心律失常（RSA）已被广泛研究作为儿童和成人中适应性情绪功能的标志物，并且研究将RSA与气质维度（例如积极影响和外向性）联系起来。但是，很少有研究检查RSA与气质特征之间的关系在儿童时期随种族变化的程度。我们检查了呼吸窦性心律不齐（RSA）与气质维度（活动水平，任务定向和影响外向）之间的关系，以及学龄前儿童中种族调节作用。对华裔美国学龄前儿童的气质和RSA进行了评估（n = 28，法师= 54.30个月）和欧洲裔美国人（n = 32，法师= 50.41个月）。研究结果表明，欧美儿童的情感外向性水平较高。种族缓和了基线RSA与气质的影响-外向维度之间的关联，只有欧洲裔美国儿童具有显着的正关联。需要更多的研究来检验社会文化经历对儿童情感调节与自主功能发展之间关系的影响。