Archives: Faculty

Kate Halliday, LCSW

Kate Halliday, LCSW, is Senior Faculty, AEDP Institute from Ithaca, New York.

Throughout Kate’s nearly 30 years as a psychotherapist, She has always been better at noticing the ways her clients are remarkable, resilient, and lovable than theorizing about the ways they are wounded.

Kate has always been drawn to images, representations, and experiences of transformation. Music, poetry, literature, the natural world, and emotional relationships have always been her education. When Kate started learning to be a teacher of young children (in her first career she worked for Head Start and in elementary schools), and then to be a therapist, it was the magic of witnessing change and growth in other human beings that enlivened the experience for her. In psychotherapy, this led Kate to study Family Systems Theory and Narrative Therapy, then EMDR, and finally AEDP. (more…)

Richard Harrison, PhD

Richard Harrison, PhD, is a faculty member of AEDP™ Institute and a Registered Psychologist with over 25 years’ experience as a clinician and teacher. He was trained and supervised in AEDP by Diana Fosha, founder of the model. He is a Certified Supervisor in both AEDP and EFT. Richard teaches and supervises graduate students in the Counseling Psychology and Psychiatry departments at the University of British Columbia, and maintains a full clinical caseload with individuals and couples in private practice in Vancouver.

Richard has authored peer-reviewed publications on AEDP theory and practice; attachment-informed supervision; and therapist self-care; including a 2020 article in Psychotherapy on “Termination in 16-session

(more…)

Shari Geller, PhD, C.Psych

Shari Geller, PhD, C.Psych, is an author, clinical psychologist, certified Mindful Self-Compassion (MSC) teacher and leader in the field of therapeutic presence.

Shari offers training modules in therapeutic presence internationally as part of a longer-term vision of having presence be a foundational training across psychotherapy approaches. With over thirty years’ experience weaving psychology and mindfulness, Shari co-authored the book, Therapeutic Presence: A Mindful Approach to Effective Therapeutic Relationships – 2nd Edition (2022) with Dr. Leslie S. Greenberg. Shari’s book: A Practical Guide For Cultivating Therapeutic Presence (2017), offers hands on tools and guidance for cultivating and strengthening presence in therapy.  Shari created the Therapeutic Rhythm and Mindfulness Program (TRM™), a group modality integrating mindfulness, rhythm practices and emotion-focused awareness to enhance wellbeing and presence.   (more…)

Mariana Barstad

Barstad, MarianaMariana Barstad, PhD in Clinical Psychology. Specialist in Medical Psychology, Psycho-Oncology and Psychological First Aid; Clinical Supervisor; Works in private practice.

Heidi Frieze

Heidi Frieze, LCSW is a certified AEDP therapist and supervisor. She is currently in private practice near Grand Central Station in New York City, and in Westchester, NY, where she treats both individual adults and couples. Heidi earned her Masters Degree in Clinical Social Work from Fordham University in 2004.

She participated in Diana Fosha’s first AEDP Immersion Course and completed one year of Core training with Diana. Over the years, Heidi has been in individual supervision with Eileen Russell and SueAnne Piliero and small group supervision with Ben Lipton. Heidi has assisted SueAnne in two previous Essential Skills I Training Courses in NYC and in a number of immersion courses.

She also assisted Diana Fosha at a weekend workshop at the Kripalu Center in the Berkshires, MA. Prior to becoming a psychotherapist, (more…)

Liza Greville, LCSW

Liza is a Certified AEDP Therapist and Supervisor in private practice in Kane, Pennsylvania. She offers individual therapy to adults in Pennsylvania, New York and Montana, as well as individual and group consultation.

Liza was introduced to AEDP in 2016, immediately struck by the ‘art of therapy’ that bridges the brilliant complexity of AEDP theory and the simplicity yet potency of the interventions. She remains ever-curious, especially interested in clinical creativity, pragmatism and presence.

Similarly, Liza seeks to join consultees in an affirming and active learning process that integrates left-brain rigor and right-brain perceptivity. She works with consultees to build skills that deepen experiential processes, to understand AEDP’s 9+1 affective change mechanisms, and to expand naturalness of use of Self. She welcomes therapists new to the model, as well as those with more experience and seeking certification. (more…)

Gregory Czyszczon, PhD, LPC

Greg is from Harrisonburg, Virginia where he teaches counseling and has a private counseling practice. He is also a clinical supervisor for the Secure Child Program, an organization providing attachment-based interventions that focus on the parent/child relationship.

Greg made his way to AEDP via interpersonal neurobiology as well as a supervision group led by David Waters, Ph.D., in Charlottesville, VA

Heather Gretton

Gretton, HeatherHeather Gretton, Ph.D. R.Psych. has more than 20 years experience working with adults, youth, and couples. She completed the AEDP Immersion Course in 2014, and continued with Essential Skills 1 and 2, and Core Training. She has received extensive individual and group supervision and has assisted at a variety of different training courses.

Dr. Gretton is involved in AEDP research and contributed as a co-author to the first AEDP Outcome Study. She is drawn to AEDP as a model of therapy that weaves together science, theory, and clinical knowledge with the authentic and therapeutic use of the self, to promote transformational and hope-filled change

Elizabeth Perkins, LMFT

Elizabeth Perkins, LMFT Liz is in private practice in San Diego, California. She is a Certified AEDP Therapist and Certified AEDP Supervisor. She specializes in Complex PTSD, chronic Depression and Psychedelic integration. Liz thrives on fine-tuning her skills in her own individual supervision and while supervising others. Liz feels that AEDP has been responsible for her most memorable and meaningful breakthrough moments in sessions.

When supervising others, she loves supporting the therapist in finding their AEDP style within the theory. She is also passionate about investigating all paths to transformational healing and has been avidly researching the intersections and parallels of AEDP  & psychedelic-assisted therapy. She is MAPS trained, a member of the AEDP & MDMA Research Committee, and a founding member of the AEDP & Psychedelics Committee. In addition, she has trained in Holotropic breathwork and TRE.

Malin Endrédi

Malin Endredi is a certified AEDP Therapist and Supervisor. Her office is in Stockholm, Sweden and nowadays online too. Malin welcomes Swedish and English speaking clients and supervisees. Malin is a member of the AEDP Sweden Program Group and one of two hosts of the AEDP Salon Stockholm/Sweden. She was a copresenter in the institute-sponsored seminar, “Transformational Synergies in AEDP, Spirituality and Psychedelics” in July, 2022.

Malin started her professional life as a clinical psychologist working with distressed parents and their dysregulated babies to help create secure attachment. After 17 years she took a Swedish attachment, relational and emotion focused psychotherapist training. That’s where Malin, through an APA video, first encountered Diana’s ways of working and AEDP and it all clicked.

She became devoted and crossed the Atlantic many times to attend trainings and assisting internationally (more…)

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