Our Contracted Trainers have spent numerous hours working alongside Glen Cooper, Kent Hoffman, and Bert Powell. They have been utilizing the Circle of Security protocol for years within their own clinical practice, and have proven presentation abilities. They have each been handpicked to become trainers for the Circle of Security Parenting DVD trainings. The listings below are alphabetical by country.


Caroline Zanetti, M.D.

Dr. Caroline Zanetti has been working with the COS model since 2004, when she began providing the COS 20 week individualised videofeedback parenting program in Perth, WA. In 2011 she published a book chapter outlining her clinical work utilising the program. Caroline is an accredited COS supervisor and trainer.

As a perinatal, infant, and child psychiatrist she has been interested in the way relationships affect the functioning and mental well-being of children and parents alike. In her work at Subiaco Raphael Centre, she has led a relationship-based approach to working with families, and has supported the professional development of others who also want to work in this way.  She has developed several successful programs designed to enhance parents’ capacity to build secure relationships for their children and themselves.

As a researcher, her interests are in theoretical constructs related to attachment, identifying parent-infant dyads at risk of mental health and relationship problems, and building interventions to support them.


Joe Coyne

Joe Coyne has worked for 20 years in the area of child and family psychology. He is particularly interested in the developmental processes involved in healthy outcomes and the impacts of parenting and life events on personal trajectories. In recent years he has been exploring the benefits of incorporating attachment theory and research into contemporary treatment approaches for parents, children and adults. He is an accredited therapist and supervisor for the Circle of Security Intervention.  In Australia he is an Endorsed Clinical Psychologist and Endorsed Educational and Developmental Psychologist.  In the past he has worked in Health services delivering family and parenting interventions, and supervising clinical staff, and prior to that in a trauma focused family service.  Since 2010 he has been on the staff of QUT and currently coordinates the Master of Psychology (Educational and Developmental). 



Sonya Vellet, Ph.D., R.Psych.

Sonya is a Psychologist in private practice in Vancouver, Canada and has specialized in infant and early childhood mental health and caregiver-infant/child attachment and primarily works with families coping with multiple challenges.  Sonya participated in the training in Circle of Security® psychotherapy in Portland in 2006, subsequently received supervision from Bert, and is currently receiving supervision from Kent in the implementation of this intervention.  In addition, Sonya initially received training in the Circle of Security® Parenting™ program in Portland in 2010, has participated in five COS-P workshops with Kent, Bert, and Deidre as trainers since then, and is currently the Canadian trainer in the Circle of Security® Parenting™ program.  Sonya also passionately collaborates with professionals from various systems to address developmental and mental health needs of young children who have been placed in foster care through an emerging Infant and Early Childhood Court team framework in British Columbia and is a court-appointed expert in infant and early childhood mental health and attachment in Alberta.  Sonya is an organic gardener and potter and spends much of her time on Hornby Island.  Through this process, Sonya is learning to do what is most meaningful to her and to serve the world in the best way she can.



Francesca Manaresi








Megumi Kitagawa

Megumi is a Professor of Faculty of Letters at Konan University, a Ph.D. of Education (Kyoto University) and a clinical psychologist. She is a reliable coder of AAI and has worked on research of attachment, including developing a projective method of assessing attachment. She has over 20 years of clinical experience in psychotherapy for children and adults at mental clinics and school counseling centers. While becoming more interested in applying attachment theory and research of child-parent relationships into clinical practice, she attended the 10-day Circle of Security Intensive program in 2007.  In 2008, working with Japanese families, she conducted the first Circle of Security Intervention program in Japan, with supervision by Bert Powell. She continues to work with Japanese families. She is a certified Circle of Security Parenting (COS-P) program facilitator, and she and her colleague translated the COS-P DVD and manual into Japanese. She has also written an article about helping caregivers by conducting Circle of Security programs (Kitagawa, 2012).

甲南大学文学部教授。京都大学大学院博士(教育学)。臨床心理士。AAI評定資格を取得し、アタッチメント研究、特にアタッチメントの投影的測定方 法開発に取り組んできた。また、20年以上の臨床経験をもち、精神科クリニック、学生相談などの場で、大人や子どもへの心理療法に携わってきた。近年、ア タッチメント理論や研究を実践に応用すること、特に親子関係支援に関心をもつようになった。2007年にCOSプログラムの訓練を受け、2008年以降、 Bert Powellによるスーパービジョンを受けながら、日本で初めて日本の親子にCOSプログラムを実施してきた。COSPプログラムの実施資格もあり、 COSPのDVDとマニュアルの日本語版を共訳した。主な著書:「養育者支援-サークル・オブ・セキュリティ・プログラム の実践」(『アタッチメントの実践と応用』数井みゆき(編)誠信書房、2012年 pp.23-43. )



Ida Brandtzæg and Stig Torsteinson

Ida Brandtzæg and Stig Torsteinson are our contracted Circle of Security Parenting trainers in the Scandinavian countries. They attended their first Circle of Security training in Spokane in 2007. Both are certified COS supervisors and serve as a point of contact in the Scandinavian countries.

They graduated from the University of Oslo with degrees in Psychology and have dedicated their teaching and clinical careers to infant psychology.  They worked in the infant section at Nic Waals Institute in Oslo for many years. Nic Waals Institute and Aline Infant Center are two pioneer institutions enhancing the importance of psychological health in infants. Brandtzæg is one of two coordinators of the infant education at The Center for Child and Adolescent Mental Health, Eastern and Southern Norway (RBUP).

Brandtzæg and Torsteinson are also dedicated to forensic work in child custody and child welfare cases. They have been central in work on behalf of The Ministry of Children, Equality and Social Inclusion in the Norwegian Courts Administration. They developed brochures presenting psychological information on how to make good arrangements for children of divorce, and information booklet and DVD on how to handle domestic violence cases. 

They have written the first Norwegian clinical book relating attachment psychology and an interdisciplinary model to treatment, and have published other works detailing attachment psychology and the Circle of Security. Ida and Stig get wonderful reviews for their COS-P seminars in Norway and Sweden. They keep a busy training schedule on top of their very busy practices, training multiple times per year on behalf of Circle of Security.



Camelia Maianu

Camelia Maianu has a Master of Science in Developmental Psychology from the University of Utah and 16 years of college teaching experience.  She is currently Associate Professor of Developmental Psychology at Harrisburg Area Community College, where she has received the President’s Award for Excellence.  She teaches a yearly course, Child Development in Context, which provides a study abroad experience to Romania for first generation college students. 

Camelia emigrated from Romania with her family in 1979, and returned to Romania as a Fulbright Research Scholar in 1999-2000, remaining for another 2 years to work with institutionalized and HIV+ children.  In the U.S. she has worked as a caseworker for mentally ill children and adolescents, a mental health counselor, a research coordinator, and a GED Instructor at the Cook County Jail in Chicago.

She is certified as a COS DVD Parenting Facilitator and regularly uses the COS model with student groups.  She is deeply committed to helping make COS available to professionals in Romania.



Neil W. Boris, M.D.
COSI Director of Project Development

Neil Boris is the Irving Harris Training Director for the Center for Prevention and Early Intervention Policy at Florida State University. After completing his residency training at Brown University in pediatrics, adult and child psychiatry, Neil embarked on a research career focusing on the social and emotional development of high-risk children—especially those under five years of age.  His research has ranged from studying early intervention programs serving high-risk families in the U.S. to capturing the impact of community-based programs for orphans in Rwanda and Malawi.  He has also always been a clinician and teacher, working in a variety of clinical settings from multi-disciplinary programs focused on young maltreated children to hospital based practice with children with life-threatening illnesses or community-based programs serving substance-abusing parents and their young children.  Neil has been a tenured Full Professor at Tulane University (in both public health and medicine) where his passion for teaching and training was awarded with a Teaching Scholar Award.  He's held several leadership positions, including being an associate editor of the Infant Mental Health Journal, serving on the editorial board of the Journal of the American Academy of Child and Adolescent Psychiatry to being on the board of directors of the World Association of Infant Mental Health.

Neil lives in a lakeside home in Orlando, Florida with his wife, three children, two fish, a hamster and a cat.

Carlos Guerrero, MSW

Carlos Guerrero has a degree in general medicine from the Pontificia Universidad Javeriana, (Bogotá, Colombia), and after his migration to the USA obtained a Master in Social Work from the California State University East Bay. Carlos is Alumni of the Harris Early Childhood Mental Health Training Program in Oakland California and the Child Trauma Training Institute Training in San Francisco California.  In 2006, he completed the 10 days intensive training of the Circle of Security program and since 2009, he has been applying COS approach to his work with Spanish-speaking families. Carlos is a Registered COS Parenting Facilitator, and assisted in the development of the DVD and manual of COSP in Spanish.

During his time in Colombia, he concentrated his work in providing support and mental health services to homeless and runaway children and youth living on the streets of Bogotá City. After migrating to the USA, he resumed his clinical work as an outpatient family therapist in community mental health, providing treatment to high-risk families in the San Francisco Bay Area. Currently, Carlos works as a Parent-Child Psychotherapist with the Early Childhood Mental Health Program at Children’s Hospital and Research Center Oakland. He provides home-based intensive individual and dyadic mental health services to diverse inner-city populations; particularly young children and monolingual Spanish-speaking immigrant families from Latin America.

Deborah Harris, MSW, LISW, IMH-E®IV

Deborah received her Master’s degree from UC Berkeley. She completed graduate and post-graduate internships at the Infant-Parent Program, founded by Selma Fraiberg, at the University of California, Department of Psychiatry and with the Family Therapy program at the Veterans Hospital in San Francisco. In addition to her work in California, Deborah has focused on diverse and rural populations in New Mexico, particularly with young children who have experienced trauma.

Deborah is passionate about the Circle of Security and is certified in the advanced Circle of Security assessment and treatment protocol and as a COS DVD Parenting Facilitator and Trainer. She provides statewide consultation to providers using the COS DVD in a variety of settings including; home visiting, early childhood education, therapeutic parenting groups, child protective service, Native American tribal settings, and more. Deborah is a graduate of the Zero To Three Leadership Development Initiative and belongs to the Zero To Three Graduate Academy.

Deborah is the director of the New Mexico Infant Team Project working with young children in protective custody, which is a long time interest and focus of her work. She teaches advanced clinical courses in infant and early childhood mental health and  provides training and reflective supervision for agencies and individual practitioners. Deborah is endorsed by the New Mexico Association for Infant Mental Health as a Level IV Infant Mental Health Mentor and Practice Leader.


Deidre Quinlan, MSW, LICSW, IMH-E® (III)
COSI Director of Project Development

A certified Circle of Security® supervisor, Deidre provides international training, clinical supervision, and site based consultation with childcare centers, practitioners, clinicians, teachers, registered facilitators, and others interested in learning together at a deeper level the Circle of Security®. In addition, she provides COS-P fidelity coaching and videotape review to researchers and facilitators around the world. As a staff member at Circle of Security International, Deidre works as a Project Developer to contribute to and support the ongoing development of Circle of Security® projects.

Deidre is particularly interested in resilience and the ability of the developing person to persevere and overcome childhood risks and adversities. For more than 20 years, Deidre has focused her clinical work on our most vulnerable population, adolescent parents and their children, using a relationship focus on developmental repair to inform her work. As the director of an integrated model of care for parenting students and their children, she supervised a licensed childcare center, school based health care and mental health clinic, and teen parent education classes.

Deidre completed her graduate studies at the University of Minnesota as well as her post-graduate training in the Infant and Early Childhood Mental Health Certificate Program. Over the years, she has worked in a variety of settings including residential treatment, community group homes, schools, day treatment, child care centers, after school programs, and in out-patient clinics. Deidre is endorsed by the Minnesota Association of Infant and Early Childhood Mental Health as a Level III Infant Mental Health Specialist.

Deidre lives in Minnesota on a hobby farm on the North Shore of Lake Superior with her husband and three children, her father-in-law, many horses, some chickens, a few cats, a rabbit, and sometimes a dog.