Psi Chi (ΨΧ) is a college student honor society in psychology with international outreach founded in 1929 at the University of Kansas in the United States. Psi Chi is one of the largest honor societies in the United States, with more than 1,150 chapters. Psi Chi has more than 800,000 members from chapters in the United States, Canada, and multiple other countries. Notable members of the organization include B.F. Skinner, Philip Zimbardo, Jon Stewart, and Phil McGraw.