The Arica School's origins began in 1956 when groups of people formed in major cities in South America to study the thoughts that Ichazo was proposing. For fourteen years these different groups studied his teachings. In 1968 Ichazo presented lectures on his theories of Protoanalysis and the ego-fixations at the Institute of Applied Psychology in Santiago, Chile. - Mitchell Tsai

Ichazo is considered by many to be the father of the Enneagram of Personality (usually just called the Enneagram) movement which uses an enneagram figure. - Mitchell Tsai

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. - Mitchell Tsai