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 graduate and undergraduate men and women who are majoring or minoring in psychology, and who meet the minimum qualifications (top 35% of their graduating class, at least three psychology courses, and at least a 3.0 GPA in those courses). 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).