Classifying personality disorders: an evolution-based alternative to an evidence-based approach.

The study of personality disorders, no less psychology as a wole, remains divorced from broader spheres of scientific knowledge. Development of a conceptual schema for classifying personality disorders should include the examination of research limitations and inductive inconsistences that undermine the likely achievements of the evidential approach. An alternative course of action is outlined here, one that looks to evolutionary theory rather than evidence-based methods for classification guidance.