Personality Types: Using the Enneagram for Self-Discovery

This is a popular practitioner text that fixed the modern nine type descriptive vocabulary of the Enneagram now in general use, and this record holds it plainly at the tier appropriate to a self-authored personality system rather than to independent psychological scholarship: Don Riso and Russ Hudson's own typology, however influential it became, is their own developed framework rather than an outside verified account of personality. Use it to document the content and origin of this specific nine type system as its own authors set it out; it is not evidence that the Enneagram accurately describes or predicts personality, a claim this primary practitioner text does not itself attempt to establish through outside testing.