This undated story by Teresah includes a visit to a Psychology of Vision event in Spain in 2008 that had unintended results.
http://www.havefun-playnice.com/stories/im-not-dying-crap/ [Update: Inactive link, June 7, 2017]
Chuck Spezzano is not a psychologist -- "Even Chuck himself says that his Psychology is a hoax" (Desktop version of this blog is more detailed)