Biopsychosocial models of children's socioemotional development highlight the joint influences of physiological regulation and parenting practices. Both high and low levels of children's baseline respiratory sinus arrhythmia (RSA) have been associated with children's maladjustment, indicative of nonlinear associations. Negative or unsupportive…

Physiological synchrony, or concordance, among caregiver-child dyads involves the matching of biological states. Understanding this process is critical for enhancing our knowledge of the ways that the caregiver-child relationship supports child development. However, the meaning of physiological synchrony for child adjustment is poorly understood.…

We examined the prediction that the interaction between Glucocorticoid Receptor Gene ("NR3C1") methylation, stress, and experienced maternal support predicts anxious and avoidant attachment development. This was tested in a general population sample of 487 children and adolescents (44% boys, M[subscript age] = 11.84, SD[subscript age] =…

Efforts to identify biological correlates of internalizing symptoms in childhood have involved examinations of HPA-axis functioning, namely Cortisol Awakening Response (CAR). However, research has not assessed the relationship between CAR and internalizing problems among children younger than 8 years. Findings with older samples have been somewhat…

Prior research suggests that parenting affects children's relationships, including those with teachers, although there is variation across individuals in such effects. Given evidence suggesting that oxytocin may be particularly important for the quality of social relationships, we tested the hypotheses (a) that change in parenting from 4 to 6…

Investigating heterogeneity in antisocial behavior early in life is essential for understanding the etiology, development, prognosis, and treatment of these problems. Data from the longitudinal National Institute of Child Health and Development (NICHD) study of Early Child Care were used to identify homogeneous groups of young antisocial children…