dyadic developmental psychotherapy institute












The DDPI  is a training institute whose purpose is to provide training, certification, and supervision in Dyadic Developmental Psychotherapy©.  

The Institute is directed by Dr. Daniel Hughes, the developer of Dyadic Developmental Psychotherapy.   Dr. Hughes received his Ph.D. in clinical psychology from Ohio University, with a clinical internship at the University of Rochester Medical School.  He is a member of the American Psychological Association (APA).  He consults with various mental health, social service, and residential treatment agencies.  He also presents workshops and trains therapists while maintaining a small direct service practice in Pennsylvania.  Dan is the author of Building the Bonds of Attachment, 2nd Ed 2006, and Attachment-Focused Family Therapy, 2007, with its companion training Workbook published in 2011 He conducts training sessions for therapists in the U.S. and internationally.

Dyadic Developmental Psychotherapy (DDP) is an integrative method of psychotherapy that was developed in the 1990s for the treatment of children and youth who manifested serious psychological problems associated with complex trauma and serious failure to establish secure patterns of attachment.  Most of the clients receiving this treatment were residing in foster homes, adoptive homes, and residential treatment centers.  DDP is highly influenced by the complex theories and extensive research findings related to attachment and intersubjectivity (Hughes 2007; Becker-Weidman & Hughes, 2009).  

Over the past decade DDP has maintained its attachment-focused, family-centered stance while continuing to refine its theoretical foundations and treatment interventions and to broaden its focus to include the treatment of all families.  The comprehensive evidence-base of DDP is described in an article by Becker-Weidman & Hughes, 2008. While DDP continues to develop its theoretical and practice base, and more research is needed, its theoretical and clinical framework is now well enough established to warrant greater efforts to standardize its use, and to insure that those practicing DDP are remaining faithful to its core principles and practices. For these reasons Dyadic Developmental Psychotherapy Institute (DDPI) was established.

DDPI provides a certification process for those clinicians who are utilizing the DDP model of treatment and who wish to become certified in having demonstrated their knowledge of its core principles and their competence in its implementation in their practice.  To be certified clinicians must complete a minimum number of hours in DDP course participation and receive consultation of their practice of DDP (through video review).  Clinicians can eventually be certified to be DDP consultants, who are responsible for the providing consultation to those applying to become DDP certified therapists. 

The DDPI board has developed  training protocols and approved Attachment-Focused Family Therapy Workbook (2011) as the required treatment manual for the Core Training in DDP. This workbook operationalizes the core principles and interventions of DDP in a flexible manner since the central features of relationships are unique and emerge in a cyclical fashion.




Chris Day
Office Manager

Dyadic Developmental Psychotherapy Institute
Quittie Glen Center for Mental Health
417 Reigerts Lane
Annville, PA 17003
717-867-8335 ext. 201



Home | About Us | DDP | Therapists | Consultants | Trainers
Books and DVDs
| Articles | Links | Contact Us | Disclaimer


Copyright © 2010-2012 DDPI. All rights reserved. 
The terms Dyadic Developmental Psychotherapy© and Dyadic Developmental Psychotherapy Institute© are copyrighted and being trademarked. 
These terms may only be used with the express written permission of the DDPI©. 
Last updated on: December 13, 2012