Dyadic developmental psychotherapy

Domain V · Systemic, relational, group & community · Daniel Hughes

What it is

DDP is a caregiver-child psychotherapy for children aged about 2 to 18. It is meant for children hurt or neglected within their early relationships: developmental trauma, reactive attachment disorder, disinhibited social engagement, and children in foster, kinship, adoptive or residential care. It…

Format

• DDP has no fixed session-by-session protocol. The sources describe a caregiver-first sequence, a flexible mix of formats, and a developmental order of treatment goals.
• Criterion for moving on: dyadic sessions begin only when the caregiver can be "open and curious with their child in the room" (CEBC). Christopher et al. (2025) describe the same order: joint sessions once the caregiver-therapist alliance is established.

Who practises it, and how they are trained or regulated

• The therapist uses affective-reflective dialogue, talking-for and talking-about, and helps the caregiver practise co-regulation.
• Regulation.
• The slides describe a chain: safety allows synchronised back-and-forth interaction; that supports conversations; conversations become stories; stories build an integrated self and a coherent autobiographical narrative. Do not move to trauma themes while the child has no felt safety or no regulating adult.

Questions to explore with your client

• What drew you to it, and what are you hoping it will change?
• Is there physical contact? Was it explained beforehand, and do you feel free to say no or stop at any point?
• Does it involve intense or unusual breathing? Have you been told about the medical conditions for which that is not advised?
• Does it involve fasting, a special diet or 'detox'? Have you discussed this with your doctor?
• Is it a group, retreat or community? How do they respond if someone wants to leave or raises a concern?
• Who runs it, and what training or registration do they hold?
• What actually happens in a session or meeting, and how often?
• What does it cost, and is there pressure to commit to more?
• How do you feel afterwards, in the hours and days that follow?
• Does it fit with, or clash with, the work we do here?

What practitioners of it watch for

• key-worker turnover. Plan endings carefully.
• sabotage after good moments. Normalise it, and repair if needed.
• skipping steps 2–3. Rehearse recent incidents in caregiver-only sessions.
• shame spikes or shutdown. Working sign: relief, or the child adding to it.
• caregivers feeling judged by the 'decrease' list. Present it with acceptance.

When to involve someone else

• New or worsening physical symptoms, or advice to stop or change prescribed medication: involve the client's doctor or prescriber.
• Signs of coercion, isolation from family and friends, escalating costs or secrecy: discuss openly and consider safeguarding.
• A crisis or thoughts of suicide: follow your crisis protocol. In the US, call or text 988; in the UK and Ireland, Samaritans on 116 123.

Drawn automatically from the guide's own sections. Stay curious: neither endorse nor dismiss what the client values, and check anything that matters against the full guide and its sources. Not medical advice.