Evolution of Millon's personality prototypes

In 1969, Millon proposed 8 personality prototypes that could be conceptualized at lower levels of severity than the level of the personality disorders. These personalities were fit into a theoretical system that emphasized the strength of the interpersonal attachment and the mode of accommodation. Disorders such as schizophrenia and depression were pictured as a decompensation of the basic personality. This article traces the evolution of Millon's theory from the original inception, through the influence of the 3rd and 4th editions of the Diagnostic and Statistical Manual of Mental Disorders, and onto its present form. Now visualized as resulting from 3 polarities, the model has expanded the number of personalities to include 3 additional prototypes.