DDPI Worldwide (formerly DDPI) provides training, certification, and supervision in Dyadic Developmental Psychotherapy and Practice.

The Dyadic Developmental Psychotherapy Institute (DDPI) and its overseeing body, the Board of Directors, were established in 2009. In 2025 we became DDPI Worldwide to better reflect our global DDP community. DDPI Worldwide is a not-for-profit organisation and is based in the USA.

DDPI Worldwide aims to educate, facilitate, promote and advance Dyadic Developmental Psychotherapy and Dyadic Developmental Practice, and provides a robust certification of this internationally.

We provide a certification process for practitioners and therapists who are using the DDP model of intervention. Certified Practitioners in DDP have demonstrated their knowledge and competence in using the model’s core principles in their practice.

DDPI Worldwide

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DDPI Worldwide

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