The aim of this study was to identify whether parenting style during a child's toddler years predicts the course of the child's internalising symptoms throughout early to middle childhood. The current study uses data from waves 1 to 7 (acquired biennially) of the infant cohort (N = 4494) of Growing up in Australia: the Longitudinal Study of Australian Children (LSAC), a population-based longitudinal study. Latent class growth analysis identified four distinct longitudinal trajectories of internalizing symptoms: Low stable (66% of the children), High increasing (7%), Low increasing (17%) and High decreasing (10%). Multinomial logistic regression indicated that low self-efficacy and socioeconomic disadvantage during the toddler years were significant predictors of unfavourable (i.e., increasing) trajectories of internalizing symptoms across later childhood. Parenting hostility was a significant predictor of the low increasing trajectory. Additionally, male children were more likely than females to follow unfavourable trajectories. However, low parenting warmth was not predictive of increasing symptoms across time. Our findings highlight the importance of parenting factors in a child's early years, particularly the potentially detrimental outcomes associated with parental hostility and low self-efficacy.
Keywords: Childhood development; Internalizing; Longitudinal; Parenting; Trajectories.