Stress can be the root cause of psychological disorders. Name four symptoms shared by acute and posttraumatic stress disorders. What life events are most likely to trigger a stress disorder? Traumatic events do not always result in a diagnosable psychological disorder. What factors determine how a person may be affected by one such event? What are the four stages in meeting the psychological needs of disaster victims? What is the link between personality styles and heart disease? List and briefly describe four psychological treatments for physical disorders.