The International Society for the Study of Personality Disorders, ISSPD, stimulates and supports scholarship, clinical experience, international collaboration and communication of research on all aspects of personality disorders including both diagnosis, course and treatment. Through its Regional and National organizations ISSPD encourages the initiative of education and research on personality disorders as well as collaborative efforts across countries and regions. ISSPD is open to professionals who are actively involved or interested in the study, assessment and treatment of personality disorders.