Faculty Profile: Carol Humphreys

Carol Humphreys

Dr. Carol Humphreys, Saybrook's Interim Provost & Executive Vise President of Academic Affairs, received her PhD in Philosophy (Clinical Psychology) from Miami University in Oxford, Ohio. Her dissertation focused on a single case study covering over 300 therapy sessions with a woman experiencing extreme internal multiplicity.

Carol began her college education as a single mother and received her AA from Cypress College in Cypress, California. She then transferred to California State University, Dominguez Hills (CSUDH) where she completed a dual major (BA) in English Lit and Psychology. Carol then received an MA in Clinical Psychology with an MFT option. It was there where she was first introduced to both psychotherapy research and, most importantly, Humanistic psychology. While at CSUDH, she focused on research with Art Bohart, PhD aimed at exploring the change process that occurs in therapy.

After graduation, Carol worked as a social worker in Compton and Los Angeles, California. As rewarding as the work was, it wasn't long before she realized she missed academia, research and theory. Despite good intentions to keep up with the current psychotherapy research, she found it often did not resonate with or connect to her field work and practice. Learning more about how to link theory to actual practice became a bit of a mission for her.

Immediately after her children went off to college and adult life, she moved to Ohio to pursue her PhD. At Miami, she continued her interest in psychotherapy research. She was honored to work closely with Larry Leitner and Bill Stiles, both prolific writers and important mentors in her professional growth. Dr. Leitner's development of Experiential Personal Construct Psychology (EPCP) guided her growth as a clinician. Dr. Stiles' work with the Assimilation of Problematic Experiences Model (APES) allowed her to look at the process of change as it occurred within the therapeutic dyad. Miami's pluralistic theoretical model introduced her to a number of theories and theorists. It allowed her to explore Humanistic, psychodynamic, relational, existential and archetypal psychology.

Since receiving her PhD, she has taught both undergraduate and graduate courses in clinical psychology at Saybrook University, Miami University, The Wright Institute, Chapman University and Brandman University. She has taught psychopathology, abnormal psychology, cognitive psychology, humanistic interventions, psychotherapy, group therapy, marriage and family therapy, family systems, developmental psychology, assessment and treatment of substance abuse, counseling skills, social psychology, history and systems, practicum, colloquium, and research methods.

As a clinician, she has practiced humanistic and existential psychology within traditional (Community, hospital, and school) clinical settings. In addition to the psychotherapy, assessment and consultation she has provided at a number of community mental health centers, school sites and detention facilities, she has also provided therapy for adults, college students, adolescents, children, and parents. For four years, she was a staff psychologist offering these same services to individuals committed to a forensic state hospital (Napa State Hospital) for individuals considered by the courts to be Not Guilty by Reason of Insanity (NGRI).

Carol is honored to serve as Saybrook's Interim Provost! She is committed to supporting the Saybrook vision as we continue to make positive and meaningful changes and sustainable growth.


Curriculum Vitae

Upcoming Presentations and Public Addresses

Degrees, Discipline, Year, Institution

Doctor of Philosophy, Clinical Psychology, 2009, Miami University, Oxford, OH
Master of Arts, Clinical Psychology, 2005, Miami University, Oxford, OH
Master of Arts, Clinical Psychology (MFCC emphasis), 1999, CSU, Dominguez Hills
Bachelor of Arts, English & Psychology, 1996, CSU, Dominguez Hills
Associate of Arts, Psychology, 1993, Cypress College, CA


Current Projects and Professional Activities


Current Publications

Osatuke, K., Humphreys, C. L., Glick, M. J., Graff-Reed, R. L., Mack, L. M., & Stiles, W. B. (2005) Vocal manifestations of internal multiplicity: Mary's voices. Psychology and Psychotherapy: Theory, Research and Practice, 75, 21-44.


Humphreys, C. L., Rubin, J. S., Knudson, R. M., & Stiles. W. B. (2005). The assimilation of anger in a case of dissociative identity disorder. Counselling Psychology Quarterly, 18, 121-132.


Leitner, L.M., Faidley, A. J., Dominici, D., Humphreys, C., Loeffler, V., Schlutsmeyer, M., Thomas, J. (2005). Encountering an other: experiential personal construct psychotherapy. In D. Winter & L, Viney (Eds.), Personal Construct Psychotherapy: Advances in Theory, Practice and Research. (pp. 54-68). London, England: Whurr.


Osatuke, K., Glick, M. J., Gray, M. A., Reynolds, D. J., Jr., Humphreys, C. L., Salvi, L. M., & Stiles, W. B. (2004). Assimilation and narrative: Stories as meaning bridges. In L. Angus & J. McLeod (Eds.), Handbook of narrative and psychotherapy: Practice, theory, and research (pp. 193-210). Thousand Oaks, CA: Sage.


Humphreys, C. L. & Leitner, L.M. (2007). Using drawings to elicit non-verbal constructs in experiential personal construct psychotherapy. Journal of Constructivist Psychology.







Important Conference Presentations

Research Interests


Research Expertise

Expertise Working with Saybrook Students


Research Expertise

Research Expertise Rating Guide:

  1. studied in a class or have read intensively on my own
  2. special training in the form of a workshop or equivalent
  3. taught a class in, or supervised research using this method (research practicum, on a dissertation or master's committee
  4. used in research myself
  5. published or presented at conferences my research using this method

Methods Traditionally Considered As Quantitative (But Need Not Be)

Laboratory Research
Field Experiments
Randomized Controlled Clinical
Quasi-experimental methods
Correlational Methods

Methods That Could Use Quantitative Or Qualitative Methods

Action Research
Survey Research
Interview Research
Observational Research
Epidemiological Research
Focus Groups
Self-Observational Methods
Narrative Methods
Feminist Methods
Content Analysis
Discovery-Oriented (psychotherapy)
Events paradigm (psychotherapy)
Archival Research
Case History Methods
Appreciative Inquiry
Multiple Case Depth Research
Hermeneutic Single Case Efficacy Design
Longitudinal research
Cross-sectional research

Methods Primarily Associated With Qualitative Research (But May Also Use Quantitative)

Ethnoautobiographical research
Grounded Theory
Heuristic Research

Types of Analysis

Simple Parametric Statistics (t-test, etc.)
Confidence intervals
Analysis of Variance (including MANOVA)
Analysis of Covariance
Regression (including multiple regression)
Discriminant Function Analysis
Structural Equation Modeling/Path Analysis
Causal Modeling
Cluster Analysis
Survival Analysis
Bayesian Analysis
Meta-analysis and effect sizes
Factor Analysis
Time series analysis
Multidimensional scaling