“…This process may reflect the adaptive reallocation of resources to the SNS, which helps mobilize the individual to respond to challenge (Beauchaine, 2001;Gunnar, Porter, Wolf, Rigatuso, & Larson, 1995;Wilson & Gottman, 1996). Thus, greater RSA withdrawal during stressful or challenging situations reflects more-effective physiological regulation (Porges, Doussard-Roosevelt, Portales, & Greenspan, 1996). Conversely, increases in RSA to stress, or maintaining consistent levels of RSA throughout stressful encounters may reflect less efficient physiological regulation, or may be due in part to lower behavioral engagement or perceived distress in response to the emotional or cognitive demands of an encounter (Porges, 2007).…”