Children who enter foster care have usually experienced maltreatment as well as disruptions in relationships with primary caregivers. These children are at risk for a host of problematic outcomes. However, there are few evidence-based interventions that target foster children. This article presents preliminary data testing the effectiveness of an intervention, Attachment and Biobehavioral Catch-up, to target relationship formation in young children in the foster care system. Children were randomly assigned to the experimental intervention that was designed to enhance regulatory capabilities or to a control intervention. In both conditions, the foster parents received in-home training for 10 weekly sessions. Post-intervention measures were collected 1 month following the completion of the training. Outcome measures included children's diurnal production of cortisol (a stress hormone), and parent report of children's problem behaviors. Children in the experimental intervention group had lower cortisol values than children in the control intervention. Also, the experimental intervention parents reported fewer behavior problems
Young children in foster care have often experienced inadequate early care and separations from caregivers. Preclinical studies suggest that early inadequate care and separations are associated with long-term changes in regulation of the hypothalamic-pituitary-adrenal (HPA) axis. In this study, the daytime pattern of cortisol production was examined among 55 young children who had been placed into foster care and 104 children who had not. Saliva samples were taken at wake-up, in the afternoon, and bedtime for 2 days. Average salivary cortisol values for each time of day were computed. A group (foster vs. comparison) time (morning, afternoon, night) interaction emerged, reflecting less decline in levels across the day for foster than comparison children. Daytime patterns were categorized as typical, low, or high. Children who had been in foster care had higher incidences of atypical patterns of cortisol production than children who had not. These differences suggest that conditions associated with foster care interfere with children's ability to regulate neuroendocrine functioning.
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