# Kevin Williams Personality psychologist who, with [[Delroy Paulhus]], introduced the **[[Dark Triad]]** of narcissism, Machiavellianism, and psychopathy in their 2002 paper — the study that consolidated three previously separate "dark" personality constructs into a single, sub-clinical, measurable framework. > [!note] Stub > Minimum-viable page created to resolve inbound wikilinks. Expand with the 2002 Paulhus & Williams paper.