Worry: A cognitive phenomenon intimately linked to affective, physiological, and interpersonal behavioral processes

Research on worry during the past 15 years has revealed a remarkable amount of knowledge about this pervasive human phenomenon. Worry involves a predominance of verbal thought activity, functions as a type of cognitive avoidance, and inhibits emotional processing. Worry also produces not only anxious experience but depressive affect as well. Recent evidence suggests that the very private experience of worry is developmentally connected to enmeshed childhood relationships with the primary caregiver and is currently associated with significant interpersonal problems, especially those involving tendency to be overly nurturing to others. At the physiological level, worry is characterized peripherally by parasympathetic deficiency and autonomic rigidity and centrally by left-frontal activation.