Enneagram of Personality, a model of human personality which uses an enneagram figure
The popular use of the Enneagram of Personality (as contrasted with the use of enneagrams within the Arica School) began principally with Claudio Naranjo who had studied with Ichazo in Chile.
The institute has since moved to Stone Ridge, New York where it offers workshops and trainings as well as publishing materials pertaining to the Enneagram.
Numerous other authors, including Helen Palmer, Don Richard Riso, Richard Rohr and Elizabeth Wagele, also began publishing widely read books on the Enneagram of Personality in the 1980s and 1990s.