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. 2015 Jan;57(1):105-19.
doi: 10.1002/dev.21267. Epub 2014 Nov 16.

Longitudinal associations between temperament and socioemotional outcomes in young children: the moderating role of RSA and gender

Santiago Morales  1 , Charles Beekman, Alysia Y Blandon, Cynthia A Stifter, Kristin A Buss
Affiliations

Longitudinal associations between temperament and socioemotional outcomes in young children: the moderating role of RSA and gender

Santiago Morales et al. Dev Psychobiol. 2015 Jan.

Abstract

Temperament is an important predictor of socioemotional adjustment, such as externalizing and internalizing symptoms. However, there is not a one-to-one correspondence between temperamental predispositions and these outcomes, implying that other factors also contribute to the development of internalizing and externalizing problems. Self-regulation is believed to interact with temperament, and has been studied as a predictor for later socioemotional outcomes. Respiratory sinus arrhythmia (RSA) is a psychophysiological measure of self-regulation that has been studied as a moderator of risk. The primary aim of the present study was to test if RSA baseline and RSA reactivity would moderate the link between temperament and socioemotional outcomes. Mothers reported the temperament of their infants (20 months; N = 154), RSA was collected at 24- and 42-months, and mothers reported externalizing and internalizing behaviors at kindergarten entry. RSA baseline and RSA reactivity moderated the relation between exuberant temperament and externalizing behaviors. However, these results were only significant for girls, such that high RSA baseline and greater RSA suppression predicted more externalizing behaviors when exuberance was high. Fearful temperament predicted later internalizing behaviors, but no moderation was present. These results are discussed in light of recent evidence regarding gender differences in the role of RSA as a protective factor for risk.

Keywords: Emotion; Respiratory Sinus Arrhythmia; Sex Differences; Temperament.

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Figures

FIGURE 1
FIGURE 1
Externalizing symptoms as a function of the exuberant factor and RSA baseline (A) and RSA reactivity (B) at 24-months for girls only. Low RSA baseline/RSA suppression is defined as 1 SD below the mean and high RSA baseline/augmentation as 1 SD above the mean.
FIGURE 2
FIGURE 2
Externalizing symptoms as a function of the exuberant factor and RSA baseline (A) and RSA reactivity (B) at 24-months for boys only. Low RSA baseline/RSA suppression is defined as 1 SD below the mean and high RSA baseline/augmentation as 1 SD above the mean. The interaction above is not significant (A). The interaction below is marginally significant (B).
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