1. The document discusses anxiety disorders and how they differ from ordinary worries and fears. It defines anxiety and lists some common physical symptoms.
2. Specific anxiety disorders discussed include generalized anxiety disorder, panic disorder, phobias, social anxiety disorder, obsessive-compulsive disorder, agoraphobia, and post-traumatic stress disorder. The causes and symptoms of each disorder are described.
3. Psychologists believe anxiety disorders may be caused by biological, cognitive, and behavioral/learning factors like classical and operant conditioning which can lead to the conditioning of anxiety responses.