Peter (PK) Jonason, Ph.D.

Although I am probably best known for my work on the Dark Triad, my career started with an interest in understanding mating strategies.  I have examined mating strategies like playing hard-to-get and mate preferences in the form of dealbreakers with Norman Li and more generally on evolutionary approaches to sex differences in mating and sexuality with David Schmitt. Also, I do work in various other areas of social psychology like prejudice, psychometrics, and happiness.

Interested in participating in my research or being a student? Contact me (

Most of my research focuses on the Dark Triad traits (see Interview). Today I am conducting projects using these traits from various perspectives including behavioral economics, behavioral ecology, organizational psychology, and experimental social psychology.