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Dr. Callahan, Principal Investigator

Dr. Callahan, Principal Investigator

Dr. Callahan is a recipient of the National Institutes of Health (NIH) Loan Repayment Program for Individuals from Disadvantaged Backgrounds and has been awarded over $10 million in grant funding as Principal Investigator or Co-Principal Investigator. Her work has been recognized with multiple awards for research excellence, mentorship, and community engagement, as well as the Distinguished Publication Award in Psychotherapy Research and multiple Outstanding Publication Awards in Training and Education in Professional Psychology.

Dr. Callahan currently serves as the Editor of Training and Education in Professional Psychology and previously served as Editor of the Journal of Psychotherapy Integration. She is a co-editor of the two-volume APA Handbook of Psychotherapy.

She is board certified in Clinical Psychology, a Fellow of the American Psychological Association, a past president of Society for the Advancement of Psychotherapy (APA Division 29), and a past president of the Society for the Exploration of Psychotherapy Integration (SEPI). She has also served in national leadership roles as the former chair of APPIC’s Scientific Review Committee and a past board member of the Council of University Directors of Clinical Psychology (CUDCP). 

Jennifer L. Callahan

Ph.D., Psychology, University of Wisconsin-Milwaukee, 2003

Dissertation Title: Test of the dose effect and phase models of psychotherapy

Michael T. Hynan

Ph.D., Psychology, University of Iowa, 1974

Dissertation Title: The influence of upright posture on shock-elicited aggression in rats

John F. Knutson

Ph.D., Psychology, Washington State University, 1969

Dissertation Title: Aggression during the fixed-ratio and extinction components of a multiple schedule of reinforcement

Kenneth E. Lloyd

Ph.D., Ohio State University, 1954

Dissertation Title: The retention of responses to classes of verbal stimuli compared with the retention of responses to specific verbal stimuli

Paul Morris Fitts

Ph.D., Psychology, University of Rochester, 1938

Dissertation Title: Experimental studies of hunger-motivated behavior and learning

Leonard Carmichael

Ph.D., Educational Psychology, Harvard University, 1924

Dissertation Title: Instinct considered from the point of view of educational psychology

Walter Fenno Dearborn

Ph.D., Psychology, Columbia University, 1905

Dissertation Title: Psychology of Reading

James McKeen Cattell

Ph.D., Psychology, Leipzig, 1886

Dissertation Title: An essay on psychometry, or the time taken up by simple mental processes

Wilhelm Max Wundt

M.D., University of Heidelberg, 1856

Dissertation Title: Utersuchungen uber das verhalten der nerven in entzundeten und degenerirten organen

Hermann von Helmholtz

M.D., Royal Friedrich-Wilhelm Institute of Medicine and Surgery, 1842

Dissertation Title: De fabrica systematis nervosi evertebratorum

Dr. Callahan’s undergraduate education was accomplished at the University of Jamestown, where she triple majored (psychology, applied music [trumpet), and music education). The legacy of her experience at UJ is evident today in the form of her deep commitment to mentorship. UJ has a student faculty ratio of 13:1 which allowed her close contact with professors who inspired and shaped her sense of self in ways that were both personal and professional. Recognized as a College Fellow, an honor bestowed on no more than two students with junior standing in a field of study annually, she was afforded academic ranking just below that of faculty for her final year of undergraduate study. Principled mentoring is key to the UJ model of education. It is also the primary method in which doctoral training in psychology is accomplished. As such, Dr. Callahan aims to bring the positive mentorship experience she enjoyed as a UJ student to the students in the CARE Lab.

After gaining work experience at a residential treatment center for children and adolescents, Dr. Callahan completed her masters and doctoral degrees in the Clinical Psychology program at the University of Wisconsin-Milwaukee. Her thesis project contributed to the development of the Perinatal Posttraumatic Stress Disorder Questionnaire–II (PPQ-II), reflecting an early focus on the creation of psychometrically sound measures designed for use in real-world clinical contexts. This work anticipated later implementation science interests by emphasizing measurement that could be feasibly embedded in routine care to support identification and monitoring of clinically significant symptoms.

Her dissertation examined the applicability of competing models of psychotherapy outcome within a training clinic setting, explicitly testing how theoretical models function under conditions of routine service delivery rather than controlled research environments. This work laid the conceptual groundwork for the CARE Lab by foregrounding questions of model fit, context, and sustainability that now anchor its implementation science approach to training, supervision, and behavioral health service delivery.

Dr. Callahan completed her APA-accredited internship in clinical psychology and clinical neuropsychology at Yale University School of Medicine and remained at Yale for postdoctoral training in the Department of Psychiatry. Her clinical training spanned inpatient, outpatient, cognitive rehabilitation, and forensic contexts, providing sustained exposure to complex healthcare systems characterized by high clinical acuity, interdisciplinary care, and variable resource constraints.

In parallel, her research training involved grant-funded work focused on neurodegenerative conditions, including dementia of diverse etiologies and psychosis. This work deepened her expertise in clinical neuropsychological assessment as a tool for applied decision-making in real-world settings, and reinforced an enduring interest in how assessment practices are translated into care planning across settings and populations. Together, these experiences further shaped the CARE Lab’s emphasis on measurement, context, and system-level factors as central to effective implementation in behavioral health services.

Team Members

Maame-Y-Darkwa

Maame Darkwa

Senior Program Project Coordinator

Louise Tang

Data Analyst

bridgette-Carroll

Bridgette Carroll

Doctoral Student

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