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Simon Paynton posted an update 6 years, 11 months ago
This is a very interesting piece of knowledge about three common personality / developmental disorders, and how they are related. I always thought that borderline was acquired, while psychopathy and narcissism are innate: but maybe I was wrong.

Source for the information in the diagram: Baskin-Sommers, Arielle; Elizabeth Krusemark; Elsa Ronningstam – “Empathy in Narcissistic Personality Disorder: From Clinical and Empirical Perspectives”; Personality Disorders: Theory, Research, and Treatment; 2014, Vol. 5, No. 3, 323-333
Thanks Simon, but i don’t understand how the diagram relates to issue of nature/nurture.
This diagram makes more sense, showing the comorbidity rather than shared traits.
So is it a Dark Triad or a Holy Trinity? Kinda hard to tell.
personality disorders comorbidity and traits