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California State University, Long Beach
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William Pedersen



Ph.D., University of Southern California, 2002
    Social Psychology

M.A., University of Southern California, 1998
    Social Psychology

B.A., Seattle University, 1994
    Psychology – Summa Cum Laude
    Humanities – Summa Cum Laude

Office: PSY 231

Phone: 562-985-5010
Classes: PSY 411/511 (Statistical Design and Analysis of Experiments)
PSY 351 (Social Psychology)
PSY 110 (Introductory Statistics)
PSY 350 (Psychology and Contemporary Social Issues)


My research is primarily focused on factors that impact aggressive behavior and violence. I am interested in a variety of personality factors including trait rumination, narcissism, impulsivity, attachment style, and religiosity. I have also investigated a variety of situational factors that impact aggression including rumination, social support, power restoration, alcohol priming, and drug use. A related line of research investigates the impact of trait displaced aggression on romantic relationships, life satisfaction, and both mental and physical health. Finally, I have smaller research programs in the areas of both intergroup relations and evolutionary psychology (specifically gender differences in mating strategies).


Affiliations and Awards:

Professional Memberships

Honorary Societies


  • Most Inspirational Professor Award, California State University, Long Beach, 2010
  • Outstanding Faculty Mentor for Student Engagement in Research, Scholarly or Creative Activities, California State University, Long Beach, 2008
  • Society of Experimental Social Psychology (SESP), 2008-present
  • Most Valuable Professor Award, California State University, Long Beach, 2007
  • Scholarly and Creative Activities Award, California State University, Long Beach, 2003-2004; 2005-present
  • Outstanding Faculty Achievement Award, California State University, Long Beach, 2001

Other Interests:

  • Basketball
  • Hiking
  • Movies
  • Water skiing