TBT-S International Trainers

TBT-S Training Institute
Laura Hill, PhD

International

Adult TBT-S Trainer

Dr. Laura Hill is Adjunct Associate Professor of Psychiatry and Behavioral Health at The Ohio State University. Dr. Hill is one of the original founders of the Academy for Eating Disorders, and was a TED talk speaker on “Eating Disorders from the Inside Out. She is a co-founder of the TBT-S Training Institute and has researched and lectured on ED for over 40 years.

TBT-S Training Institute
Christina Wierenga, PhD: International

Child/adolescent and Adult Neurobiological TBT-S Trainer

Dr. Christina Wierenga is a Professor of Psychiatry at the University of California San Diego (UCSD) and a Fellow of the Academy of Eating Disorders. As Co-Director of Research and Senior Supervising Clinical Psychologist at the UCSD Eating Disorder Center for Treatment and Research, she has been working with adolescents and adults with eating disorders for over a decade. She is an expert in the neurobiology of eating disorders and co-developer of Temperament Based Therapy with Support (TBT-S).

TBT-S Training Institute
Stephanie Knatz Peck, PhD: International

Child/Adolescent and Young Adult TBT-S Trainer

Dr Stephanie Knatz Peck is a clinical psychologist and associate clinical professor at the UCSD Department of Psychiatry. She previously served as director of intensive family treatments at the UCSD Eating Disorder Center. Dr Knatz Peck co-developed TBTS alongside Dr’s Hill and Wierenga and adapted TBT-S for youth, including specific adaptations for children, adolescents and young adults.

TBT-S Training Institute
Kristin Stedal, PhD: Scandinavian Countries

Adult TBT-S Trainer 

Dr. Stedal is a licensed clinical psychologist and senior researcher in eating disorders. She has researched neurocognitive functioning in anorexia nervosa since 2008. In 2017, Dr. Stedal initiated TBT-S in Norway and facilitates its continued adoption to Scandinavia.

TBT-S Training Institute
Krista Crotty, PsyD: International

Adult TBT-S Trainer

Dr. Krista is a licensed clinical psychologist and a Certified as a TBT-S Trainer. She has worked in the field of eating disorders since 2009. She is the owner of Brain Based Therapy NW, in Spokane, Washington. It is the first privately owned TBT-S intensive treatment program in the US. She provides TBT-S 5-Day Eating Disorder Treatment programs for adults with eating disorders. This intensive program has and is being studied internationally showing significant impact on adults’ lives. It addressed the brain-bases of eating disorders that treat to clients’ traits.

Juana Poulisis
Juana Poulisis, MD, Argentina & Spanish speaking countries in South America

Child/Adolescent and Adult TBT-S Trainer

Psychiatrist – University of Buenos Aires | Master in Psychoneuropharmacology – Universidad Favaloro | Specialist in Eating Disorders

Fellow, Academy for Eating Disorders (AED)

Current Chair, IAEDP Argentina

Former President, IAEDP International Chapter

Former President, AED Latin American Chapter

TBT-S Training Institute
Jasmin Watson, MA: Australia & New Zealand

Child/adolescent and Adult TBT-S Trainer

Jasmin Watson has a master’s in occupational therapy (2012) and is a mental health occupational therapist and eating disorder specialist. She is As the first Certified treatment provider and trainer for Temperament-Based Therapy with Support (TBT-S) Training Institute in Australasia, Jasmin has played a pioneering role in implementing TBT-S across Victoria’s healthcare landscape. She is also the principal investigator of Australia’s first research study on TBT-S. Her research is focused on improving treatment outcomes for individuals with eating disorders. Jasmin continues to lead initiatives that influence both clinical practice and service development across Australia.

Leah Graves 2025

Leah Graves, RDN, LDN, hon CEDS-C, FAED

International

Adult & Child/Adolescent TBT-S Dietitian/Nutritionist Trainer

Leah Graves, RDN, LDN, hon CEDS-C, FAED, is a nationally recognized expert in eating disorder (ED) care with four decades of experience in clinical practice, training, clinical supervision, and program development. She has moved the field of ED forward through her development of a TBT-S advanced training for dietitians/nutritionist to receive certification. She is founder and principal of Graves Nutrition Consultancy and a partner at Complex Solutions for Eating Disorders, where she provides advanced consultation to clinicians, treatment teams, and organizations. A Fellow and founding member of the Academy for Eating Disorders, Leah has held leadership roles on its Executive Team and Board of Directors. She holds the Certified Eating Disorder Specialist–Consultant credential and serves on advisory boards for the National Eating Disorders Association, Rock Recovery, and the National Center of Excellence for Eating Disorders. She also serves on the Editorial Board of Eating Disorders Review.

Maria Tsiaka color
Maria Tsiaka, PhD: Mediterranean Countries

Child/adolescent & Adult TBT-S Trainer

Maria Tsiaka, BA, PhD is a psychologist, systemic family-therapist and Founder and Executive Director of the Hellenic Center for Eating Disorders, a profit support and outpatient treatment facility established in 2006 in Athens, Greece. She has been working on the field of eating disorders since 1997.

In 2012, she has developed and implemented the Home-Based Treatment Program and Intensive Outpatient Program for adolescents and adults with severe and enduring eating disorders all over the country for first time. She has studied and practiced the cognitive interpersonal maintenance model on Greek families and investigated its applicability on bulimia nervosa and binge eating disorder in collaboration with Professor Janet Treasure. Furthermore, in 2017 she initiated TBT-S in Greece and facilitates its adaptation to Mediterranean region. She is certified TBT-S Trainer and Treatment Provider.

Terra Towne
Terra Towne, PhD.

Westcoast, USA

Terra Towne, Ph.D. is a San Diego-based clinical psychologist and owner of Terra Towne Psychotherapy and Consultation, a group outpatient practice which she founded in 2021. Terra is passionate about providing and training clinicians in evidence-based care for eating disorders. She is a certified Family-Based Treatment (FBT) provider and Temperament-Based Therapy with Supports (TBT-S) trainer and currently runs 5-day TBT-S intensives for children, adolescents, and their families with TBT-S co-developer, Dr. Stephanie Peck. Terra previously worked as a staff psychologist and program manager of the Intensive Family Treatment programs at the UCSD Eating Disorders Center.

er.