AEDP Institute

Director and Founder

Diana Fosha, PhD

Diana Fosha, PhD, the  developer of AEDP (Accelerated Experiential Dynamic Psychotherapy), is also Co-Director, with Shigeru Iwakabe, Ph.D., and Jenn Edlin, MF., of AEDP research.  For the last 20 years, Diana has been active in promoting a scientific basis for AEDP's healing-oriented experiential therapy. AEDP’s transformational theory, a basis for putting neuroplasticity into clinical action, is similarly receiving increasing recognition. Drawing on affective neuroscience, attachment theory, mother-infant developmental research, and research documenting the undreamed-of plasticity in the adult brain, AEDP has developed an experiential clinical practice which reflects the integration of science, research and practice in psychotherapy.

Diana has always been a phenomenological researcher, meticulously examining the process of therapy by repeatedly watching and tracking micro change processes. This is a qualitative phenomenological research of its own kind, which has resulted in an extensive and original phenomenology of the transformational process, and the close and detailed description of  transformational affects, e.g., the healing affectsthe tremulous affects, and core state. These concepts are closely aligned to and grounded in  observational data and they turn out to be universal: their experiential validity is evident in that the subjective experience of  therapists from many cultures across the globe -- Brazil, China, Israel, Japan, Sweden, to name just a few-- resonate with these phenomena.

Her deep commitment to research has extended to include more formal empirical research methods in recent years. Diana Fosha's collaboration with Shigeru Iwakabe and Nuno Conceicao resulted in a series of conference presentations that tapped into features unique to AEDP, such as metatherapeutic processing, clients' subjective experience of change,  the phenomenology of AEDP therapists’ professional growth and wellbeing, AEDP supervision, etc. Manuscripts of these conference papers are now being prepared and readied for publications.

From these research activities, in collaboration with her colleagues, Diana has been evolving AEDP's basic research stance: Like AEDP itself,  research into AEDP processes and outcome is a collaborative creative endeavour amongst researchers, clinicians, and patients, based on mutual respect and appreciation, highest rigour and precision, open investigative attitude, and finally, the shared and generative joy of discovery.

In 2013, she invited Shigeru Iwakabe PhD and Jenn Edlin MFT to join her in the endeavour of conducting formal research into AEDP and the research committee was formed. Now, the AEDP research program is set and launched.

AEDP Developer and Director: Diana Fosha, PhD

Diana Fosha

Diana Fosha, PhD, is the developer of AEDP (Accelerated Experiential Dynamic Psychotherapy), a healing-based, transformation-oriented model of psychotherapeutic treatment; she is Founder and Director of the AEDP Institute. Based in New York City, where she lives and practices, she has been on the faculties of the Departments of Psychiatry and Psychology of NYU and St. Luke’s/Roosevelt Medical Centers (now Mount Sinai) in NYC, and of the doctoral programs in clinical psychology at the Derner Institute for Advanced Psychological Studies and The City University of New York. Diana Fosha is the author of The Transforming Power of Affect: A Model for Accelerated Change (Basic Books, 2000), and of numerous articles on an attachment-emotion-transformation focused experiential treatment model. She is senior editor, with Daniel Siegel and Marion Solomon, of The Healing Power of Emotion: Affective Neuroscience, Development & Clinical Practice (Norton, 2009), part of Norton’s Interpersonal Neurobiology series, and co-author, with Natasha Prenn, of Essentials of AEDP Supervision (APA, 2016). APA has issued 3 DVDs of her APA work. [Learn more and purchase here.]  She has contributed chapters to, among others, Clinical pearls of wisdom: 21 leading therapists offer their key insights, edited by M. Kerman (Norton, 2009); Complex traumatic stress disorders: An evidence-based clinician’s guide, edited by C. Courtois & J. D. Ford (Guilford, 2009);   Healing trauma: Attachment, mind, body and brain, edited by Marion Solomon and Daniel Siegel (Norton, 2003); and to The comprehensive handbook of psychotherapy, Volume 1: Psychodynamic and object relations therapies, edited by J. J. Magnavita (Wiley, 2002). For the last 20 years, she has been active in promoting a scientific basis for a healing oriented attachment, emotion and transformation focused therapy.

Known for her powerful, precise yet simultaneously poetic and evocative affective writing style, Diana’s phrases — “undoing aloneness,” “existing in the heart and mind of the other,” “True Other,” “make the implicit explicit and the explicit experiential,” “stay with it and stay with me,” “rigor without shame” and “judicious self-disclosure” — capture the ethos of AEDP.

Watch Diana's Trusting Vitality video here.