Kent Hoffman Glen Cooper and Bert Powell

Kent Hoffman, Glen Cooper, and Bert Powell have devoted their Spokane, WA, clinical practice of more than 30 years to translating complex clinical insights and developmental research into straightforward and accessible protocols for use with families and adult clients. During the last two decades they have collaborated in applying object relations and attachment theory into the creation of the Circle of Security.

The three partners have served as consultants to university research projects involving Circle of Security® protocols for a wide range of clients, including Head Start families, at-risk infants, street-dependent and teenage parents, and incarcerated mothers. Each has received the Washington Governor’s Award for Innovation in Prevention.  Cooper, Hoffman, and Powell have coauthored many peer-reviewed journal articles and book chapters focusing on early intervention and the specifics involved within the Circle of Security Treatment Model. In 2013 their book, The Circle of Security Intervention: Enhancing Attachment in Early Parent-Child Relationships, was published through Guilford Press.

Cooper, Hoffman, and Powell formed Circle of Security International to provide training on COS early intervention, attachment theory, assessment, and differential diagnosis. In response to the need for a scalable COS model, the three developed Circle of Security® Parenting™ (COSP™), an 8-week DVD protocol for use by clinicians and parent educators with groups, dyads, and individuals that has been translated into seven languages. This protocol can be learned within a four-day training, now available throughout the world.


Glen Cooper has been passionately involved in social services for almost forty years.  His life experiences, which range from working and living in a homeless shelter in downtown Los Angeles to ten years as a treatment foster parent, speak to his enthusiasm and commitment. Early in his career, Glen worked part time for many years so that he could participate in the day-to-day experience of parenting his foster children and later his own children. He considers this time of being home with children one of the joys of his life and a vital foundation for his clinical work.

Glen has extensive training in Family Therapy, Object Relations, and Attachment Theory.  Prior to his 27 years in private practice, Glen worked as a teacher and director of a preschool for low-income children, a therapist for sexually abused children and their families, and continues to consult with Spokane Head Start as he has done for over 25 years.

Glen has worked with researchers at University of Virginia, University of Maryland, City of Baltimore, and Tulane University. Research projects include partnering with the judicial system, child protective services, and community service providers to coordinate early intervention and treatment for incarcerated mothers, at risk infants, and teenage parents.

Glen and his colleagues received the Governor’s Child Abuse Prevention Award in Washington State for their work in the Circle of Security® Project. He has presented workshops throughout the U.S., and in Canada, England, Uganda, New Zealand, Germany, and Australia. National and international audiences rate Glen highly for his warmth, kindness, humor, and ability to present complex material in a manner that is engaging and accessible.


Kent Hoffman received his doctorate in 1975 from the Claremont Graduate School of Theology focusing on the interface between psychological crisis and struggles within relationship. This has remained the central interest of his professional career. After graduation he worked with psychiatric patients in prison, individuals with terminal cancer, survivors of sexual abuse, and the homeless on the streets of Los Angeles.

Since 1985 he has been in private practice at Marycliff Institute in Spokane. While receiving post-doctoral certification in psychoanalytic psychotherapy with the Masterson Institute of New York City, Kent began focusing on the creation of a methodology designed to support the healthy emotional development of infants and young children.

Kent’s ongoing focus continues to be the application of the Circle of Security model to street dependent (homeless) teenage mothers, fathers, and their infants. He is also designing approaches to support security for high-risk youth within school settings.

Kent has been a clinical consultant for attachment-related interventions at the University of Virginia, University of Maryland, Tulane University, and Queensland Institute of Technology. 

As a practitioner of mindfulness meditation and contemplative practices over the past 40 years, Kent is continually seeking an integration of psychological need and spiritual practice. You can read about this focus on his website, www.eightysevenminutes.com. He recently gave a TEDx talk on his favorite topic, Infinite Worth. It can be found on YouTube

Kent and his colleagues received the Governor’s Child Abuse Prevention Award in Washington State for their work in the Circle of Security® Project. Kent was also given the Child Advocate of the Year Award by Spokane Head Start and the Washington Children’s Alliance and the Excellence in Advocacy Award by the Washington Counseling Association.

Kent and his wife Kim live in the hills outside of Spokane. Their son, Kai, lives and farms in the San Juan Islands off the coast of Washington.


As a clinician and teacher Bert Powell has committed his career to learning how people struggle and succeed at negotiating emotional security in their lives. He began his clinical work as an outpatient family therapist in a community mental health center in 1974 providing treatment for high-risk families.  As a family therapist he learned the key to intervention was not just change in behavior but change in the quality of intimate relationships. Seeing behavioral problems as relationship struggles has been an organizing principle for Bert as he pursued extensive training and supervision throughout his career. He was trained in Family Therapy through the Philadelphia Child Guidance Clinic and earned certification in psychoanalytic psychotherapy from the Masterson Institute of New York.

As one of the originators of the Circle of Security® Project, Bert has been exploring the clinical applications of attachment theory for individual, couples, and family therapy as well as for early intervention. He currently provides consultation to Spokane’s Public School’s Behavioral Intervention Program and to the Martin Luther King Center regarding the clinical utilization of attachment theory with at-risk youth and families.

Over the last 10 years Bert has provided training and clinical supervision for research projects on early intervention for the University of Virginia, the University of Maryland, Tulane University, the University of Hamburg, Queensland University of Technology, Louisiana State University, St. John of God’s Hospital in Perth Australia and for Norway’s National Network for the Study of Infant Mental Health. He is an Adjunct Assistant Professor in the Graduate School of Counseling Psychology at Gonzaga University and an International Advisor to the Editorial Board of the Journal of Attachment and Human Development.

In Washington State Bert and his colleagues have been recognized for their work in the Circle of Security with the Governor’s Child Abuse Prevention Award, the Community Service Award by the SPO-CAN Counsel for the Prevention of Child Abuse, and the Department of Health and Human Services Regional Award of Honor for contribution to Head Start children and families.