Psi Chi is the International Honor Society in Psychology, which was founded in 1929 for the purposes of “encouraging, stimulating, and maintaining excellence in scholarship, and advancing the science of psychology.” Psi Chi is one of the largest honor societies in the United States, having more than 1,100 chapters. Psi Chi has inducted more than 600,000 lifetime members from chapters in the United States, Canada, and multiple other countries. Famous members include B.F. Skinner, Philip Zimbardo, Jon Stewart, and Dr. Phil.