Mary Sean O'Halloran


Full Professor
Clinical Director
Department of Applied Psychology and Counselor Education
College of Education and Behavioral Sciences

Contact Information

299 McKee Hall, Campus Box 131
The University of Northern Colorado
Greeley, CO 80639
(970) 351-1640
(970) 351-2625 (fax)

View CV (PDF)


  • PhD in Counseling Psychology; The University of California, Santa Barbara
  • MA in Counseling; The University of California
  • BA in Anthropology; The University of Illinois
  • Doctoral Internship; Colorado State University

Courses Taught

  • Doctoral Practicum
  • Psychological Trauma & Crisis Intervention
  • Counseling Diverse Populations
  • Professional Development Seminar
  • Seminar in Personality and Counseling Theories
  • Theories of Counseling
  • Eating Disorders

Research Areas/Interests

  • Psychological Trauma, Vicarious Trauma,  and Crisis Intervention
  • International Psychology
  • Child Abuse and Neglect
  • Clinical Training and Supervision
  • Eating Disorders

Theoretical Orientation

  • Cognitive-Constructivist

Sample of Publications

  • Books
    • O'Halloran, M. S. (1994). Focus on Eating Disorders. Santa Barbara, CA.: ABC-CLIO Press.
  • Book Chapters
    • Helm, H., O'Halloran, M.S., & Kahlo, D. (2010). Funding training clinics. In A. K. Mobley & J. E. Myers. Developing and maintaining counselor education laboratories (2nd edition). Alexandria, VA: Association of Counselor Education and Supervision.
    • O’Halloran, M.S & Weimer, A. K. (2008). Child Maltreatment. In: Leong, F. T. L. Editor-in-Chief) Altmaier, E. & Johnson, B.D. (Eds.). Encyclopedia of Counseling Psychology. (Vol. 1, pp. 69-75). Sage Publications: Thousand Oaks, CA.
    • O’Halloran, M.S & Milkavich, A. (2007). Boulimie et troubles apparentés  à l'adolescence : symptômes, diagnostic, classification et traitement (Bulimia and related disorders in adolescence : symptoms, diagnostic, classification, and treatment) . In Chabrol, H. (Ed.). Les troubles des conduites alimentaires   chez l'enfant et l'adolescent (Paris: SOLAL).
    • O'Halloran, M.S., Ingala, A,M., & Copeland, E.P. (2005). Crisis Intervention with Early Adolescents who Suffered a Significant Loss. In A.R. Roberts: Crisis Intervention Handbook: Assessment, Treatment, and Research. London: Oxford University Press.
    • O'Halloran, M.S. (2004) Emily: From "I'm nothing special" to "I don't need anorexia anymore." In: LeCroy, C. & Daley, J. (Eds.). Case Studies in Child & Adolescent Treatment (pp. 38-50).Thousand Oaks, CA: Brooks/Cole.
  • Articles
    • O’Halloran, M.S., Rizzolo, S., Wacker, R., & Cohen, M.(2013). Assessing the Impact of a Multiyear Marriage Education Program.  The Family Journal:Counseling and Therapy for Couples and Families.21(3) 328-334.  Online: The Family Journal 1066480713476849, first published on May 2, 2013. doi:10.1177/1066480713476849
    • O’Halloran, M.S., Rizzolo, S., Phillips-Carrico, C., Dreier, A.S. & Cohen, M. (in press). Evaluating the effectiveness of a marriage and relationship education program: A qualitative perspective.Interdisciplinary Social Sciences Journal.
    • O'Halloran, M.S & Weimer, A. K. (2005). Changing roles: Individual and family therapy in the treatment of anorexia nervosa. The Family Journal 13 (2), 181-87.
    • Lonergan, B., O'Halloran, M.S. & Crane, S.C. (2004). The development of the trauma therapist: A qualitative study of the child therapist's perspective and experience. Brief Treatment and Crisis Intervention, 4 (4), 353-366.
    • Callahan, S., Chabrol, H., O'Halloran, M.S., Knotter, A., Rousseau, A., Bru,V., Danel, M., Cueto, C., Levasseur, M., Cuivelliez, F., Pignol, L. (2003) Diagnostic des troubles alimentaires : Présentation d'un test pour diagnostiquer les troubles alimentaires et une première etude épidémiologique des troubles alimentaires chez les adolescents. Encéphale, 29, (3), 239-247. [Translation: Diagnosing eating disorders: Presentation of a test to diagnose eating disorders and a preliminary epidemiological study of eating disorders in adolescents.]
    • O'Halloran. M.S. & O'Halloran, T. (2001) Teaching courses on trauma and violence: Addressing the issues and the individuals. Teaching of Psychology, 28 (2) 92-97.
    • Mintz, L.B., O'Halloran, M.S. (2000) The Eating Attitudes Test: Validation with DSM-IV Eating Disorders Criteria. Journal of Personality Assessment, 74 (3), 489-503.

Federal Reports:

    • 2007-2011 Annual and Semi-Annual reports for the Building Healthy Marriages Program grant. U.S. Department of Health and Human Services, Administration for Children and Families, Office of Family Assistance. Weld County Department of Health and Human Services, Greeley, CO.