Ph. D.

   The Ohio State University, USE, 1981. Social Psychology

        Minors: Consumer Behavior, Statistics

        Dissertation: The effects of cohesiveness on social loafing in simulated word processing pools. (Advisor: B. Latané)

M. A.

    The Ohio State University, USA, 1977. Social Psychology

        Master's Thesis: The loss of control as a determinant of social loafing. (Advisor: B. Latané)

B.S. (cum laude)   

   University Of Washington, 1975. Major: Psychology


Employment History:

2004 - present Professor, Department of Psychological Sciences, Purdue University, West Lafayette, IN 47907
2001-2004 Professor and Deputy Dean of Division, Department of Psychology, Macquarie University, Sydney, Australia.
1997-2000 Senior Lecturer - Associate Professor, University of New South Wales, Sydney, Australia (tenured 1999). 
1995-1996 Visiting Professor of Psychology, University of Queensland, Brisbane, Australia. 
1989-1996 Associate Professor (tenured, 1993), Director of the Social Psychology Ph. D. program, University of Toledo, OH. 
1988-1989 Visiting Associate Professor, Purdue University, West Lafayette, IN.
1986-1988 Visiting/Acting Associate Professor, and research associate to Claude Steele on ADAI Grant "A cognitive-behavioral etiology of alcoholism" at the University of Washington, Seattle, WA. 
1979-1987 Instructor through Associate Professor (tenured, 1986), Drake University, Des Moines, IA. 

Professional and Editorial Experience:


Social Influence, 2008-present

Associate Editor: 

Personality and Social Psychology Bulletin, 2004-present.

APA Division 49 journal: Group Dynamics: Theory, Research and Practice, 1996-2001.  

Guest Editor:

Special issue of Group Dynamics: Theory, Research and Practice on "Groups and the Internet."  

Editorial Board for: 

Journal of Personality & Social Psychology (Group Processes and Intergroup Relations), 1996-2003.

Personality and Social Psychology Bulletin, 2003-2004.

Group Processes and Intergroup Relations, 1997-present.

Basic and Applied Social Psychology, 1992-1995  

Reviewer for: 

Basic and Applied Social Psychology, British Journal of Social Psychology, Contemporary Psychology, Memory and Cognition, Journal of Applied Social Psychology, Journal of Experimental Social Psychology, Journal of Occupational and Organizational Psychology, Journal of Personality & Social Psychology (Attitudes & Social Cognition, Interpersonal Relations and Group Processes), Journal of Abnormal Psychology, Personality and Social Psychology Bulletin, Organizational Behavior and Human Decision Processes, Psychology, Public Policy, and Law, Psychological Review, Divisions 8 and 41, APA convention, National Science Foundation - Social & Developmental Psychology, McGraw-Hill, Dorsey Press, Allyn & Bacon, and Prentice-Hall.  

Midwestern Psychological Association

Program Committee Member, 1985-1987

Program Chairperson, 1987

Convention Manager, 1992-1996

Council, 2001-2003  

EAESP-SESP Small Groups Pre-Conference: 

Organizer of Sept. 1995, in Washington, D.C.  

Sydney Symposium of Social Psychology

Co-organizer 1998-2004.  

Society of Australasian Social Psychologists

President, 2003-2005

2003 Annual Conference host/organizer

Professional Organization Memberships:

Fellow, American Psychological Association
Fellow, Association for Psychological Science
Fellow and Past President, Midwestern Psychological Association
Fellow, Society for Experimental Social Psychology
Society for Personality and Social Psychology

Past President, Society of Australasian Social Psychologists (past president)

Fellow, International Society for Research on Aggression (2004)
Affiliate member, European Association of Experimental Social Psychology (June 2005 – present)

Workshops and Seminars:


Oct. 2010 Research Masters Course, “Social exclusion and acceptance,” Vrije Universiteit, Amsterdam, NL

Oct 2009: Research Masters Course, “Social exclusion and acceptance,” Vrije Universiteit, Amsterdam, NL

Aug 2009: Context, Causes and Consequences of Conflict, Lorentz Center, Leiden, NL.

Dec 2008: Research Masters Course, “Social exclusion and acceptance,” Vrije Universiteit, Amsterdam, NL

Nov 2007: Research Masters Course, “Social exclusion and acceptance,” Vrije Universiteit, Amsterdam, NL

Sept 2006: Invited Speaker to the Pittsburgh Psychoanalytic Society and Institute Conference on Shame and Rejection, Pittsburgh, PA.

June 2006: Invited participant in Round Table Discussion on Utility of Social Psychology Theory and Research for the Department of Homeland Security, Washington, DC.

May 2006: Panelist, APA Academic Career Workshop: “Entering the Academic Marketplace: Advice from Experts,” Chicago, IL.

May 2006: Research Masters Course, “Social exclusion and acceptance,” Vrije Universiteit, Amsterdam, NL

October 2005: Research Masters Course, “Social exclusion and acceptance,” Vrije Universiteit, Amsterdam, NL

March 2005: Conference on Group Processes in Computer-Supported Interaction, Miami University, Oxford, Ohio.

Feb 2004: The Power of Social Exclusion, Kurt Lewin Institute, Amsterdam.

May 2002: Virtual Reality Methods in Social Psychology (with James Blascovich and Andy Beall); sponsored by SASP-SPSP, and a $20,000 grant from Macquarie University.

April 2002: Negotiating the job market in academic social psychology. SASP Post-graduate Preconference, Adelaide.

April 2000: Using the Internet in social psychology research. SASP Post-graduate preconference, Fremantle.

April 1999: How to publish in social psychology journals. SASP Post-graduate preconference, Coolum.

Invited Colloquia and Keynote Addresses:


2011: Duke University, Department of Psychology

2010: Dartmouth University Department of Psychology; Keynote Speaker for the Kurt Lewin Institute conference, Zeist, The Netherlands; Vrije University, Department of Social and I/O Psychology; University Place Assisted Living Community, West Lafayette.

2009: Northeastern University Social Psychology Brownbag; Distinguished Visitor, Hong Kong University; Great Plains Undergraduate Psychology Conference, Stephen F. Davis Keynote Speaker, Kearny, NB.

2008: DePauw University; Syracuse University; University of Chicago Graduate School of Business; Miami University – 2 talks (Ohio); Purdue University Department of Economics; Keynote Speaker at the 6th Annual International Conference on Bullying in the Workplace, Montreal. Keynote Speaker at the International Society for Research on Aggression, Budapest; University of Alabama.

2007: University of Manitoba; University of Wisconsin-Parkside; The Citadel.

2006: University of Texas at Austin; University of Wyoming; Pittsburgh Psychoanalytic Society.

2005: Ohio State University; Michigan State University, University of Iowa; SPI (Social Psychologist of Indiana) speaker, Indiana University; University of Minnesota; Monmouth College (Illinois); ILLOWA (Undergraduate social psychology conference of Illinois and Iowa) Keynote speaker; University of Pittsburgh & Carnegie Mellon University; University of Michigan.

2004:   Leiden University, The Netherlands; Macquarie University; NSW Association of Crown Prosecutors; James Cook University, Townsville, QLD; University of Chicago; Northwestern University.

2003:   University of California—Davis; University of California—Irvine; Australian Association of Crown Prosecutors, Perth; APS Forensic College, Sydney; Keynote Speaker at the German Association of Social Psychology, Heidelberg; University of Amsterdam; University of Toledo; Stanford University, Flinders University.

2002:    Georgia State University; Augusta State University

2001:    University of Illinois; University of California at Santa Barbara; Northeastern University, Macquarie University Department of Biology. University of Western Sydney.

2000:    University of Sydney; Flinders University (2 talks); University of Melbourne; Newcastle University; Macquarie University

1999:    University of New South Wales, Department of Commerce & Marketing

1998:    University of Washington, Seattle; The Australian National University, Canberra.

1997:    LaTrobe University, Melbourne, Victoria.

1996:    Princeton University, Princeton, NJ; Illinois State University, Normal, IL; Macquarie University, Sydney, Australia; University of Melbourne, Australia; Charles Sturt University, Wagga Wagga, Australia; Victoria University of Wellington, New Zealand; University of Auckland, New Zealand.

1995:    University of Queensland, Brisbane, Australia; Central Queensland University, Rockhampton, Australia.

1994:    Northwestern University School of Law

1993:    University of Utah; Northwestern University School of Law

1992:    Miami University, Northwestern University School of Law, Hope College

1991:    Michigan State University

1990:    Howard University, Northeastern University

1989:    Ohio State University

1988:    Purdue University

1987:    University of Washington, Seattle

1986:    Central Washington University, University of Arkansas

1985:    Southern Illinois University, Dept. of Psychology and School of Law

1984:    Illinois State University

1982:    Notre Dame University

1981:    Georgia College

Research Consultation:

Expert witness for U.S. Federal, State, and County trials in Arizona, Arkansas, California, Indiana, Iowa, Kentucky, Michigan, Minnesota, New Jersey, Ohio, Pennsylvania (civil); Rhode Island, Tennessee, Texas, Virginia, West Virginia and Washington.  Testified on social and cognitive factors that influence eyewitness accuracy and confidence, 1987 - present. 

Consultant for Psychology Exhibit at the Center for Science & Industry, Columbus and Toledo, OH, USA, 1995.

Expert witness in NSW Supreme Court on effects of pre-trial publicity on potential juror bias, 1999.


Media Consultation:

I have conducted newspaper, radio, television, and magazine interviews on my own research (e.g., Time Magazine, 1981; New Scientist, 1998; The Australian, 2002; Today Show, 2002; NBC Dateline, 2001; The Science Show, 2001, 2002; Good Medicine, 2001) and on a variety of social psychological topics outside of my own research experience (e.g., 11am with Andrew Daddo and Anne Fulton; ABC Radio 702 Evening Show with James O'Loughlin- twice in 2002; f.a.q., 2001; Big Brother, 2002).