The current investigation will address some similar factors considered in prior research, but will considerably extend our understanding of how psychological, familial, and environmental factors influence noncardiac chest pain. In this investigation, a number of variables that have not been considered in prior research in this area will be included. Among these child variables are: the children's pain coping strategies, the children's somatization behaviors aside from chest pain, the children's externalizing symptoms (e.g., symptoms of ADHD, oppositional defiant disorder), school related problems, social competencies, parental perceptions of the child's vulnerability, functional disability (the degree to which chest pain interferes with normal daily functioning), and the child's health care utilization. Also, a more sensitive quantification of the children's frequency and intensity of chest pain will be collected, as well as information on situations in which the pain occurs. Parent report of child functioning and child self-report will be used to assess children's behavior. The parental factors to be assessed include the parents' own physical conditions and health care utilization, as well as the parents' psychological functioning. The amount of changes and stress the family as a whole has experienced in different domains will also be assessed as well. Measures of these constructs, as well as children's anxiety and depression (similar to Lipsitz et al. reviewed above) will be collected at the time of the original appointment.