Psi Chi is the International Honor Society in Psychology, founded in 1929 for the purposes of encouraging, stimulating, and maintaining excellence in scholarship, and advancing the science of psychology. Membership is open to undergraduate, graduate, and faculty men and women who make the study of psychology one of their major interests, and who meet the minimum qualifications. Psi Chi is a member of the Association of College Honor Societies and is an affiliate of the American Psychological Association (APA) and the Association for Psychological Science (APS). Psi Chi's sister honor society is Psi Beta, the national honor society in psychology for community and junior colleges. Psi Chi functions as a federation of chapters located at about 1,100 senior colleges and universities in the U.S., Canada, the Caribbean, Ireland and New Zealand. The Central Office is located in Chattanooga, Tennessee. A Board of Directors, composed of psychologists who are Psi Chi members and are elected by the chapters, guides the affairs of the organization and sets policy with the approval of the chapters.