Neurosequential Model

1. Introduction

Version followed: the Neurosequential Model of Therapeutics (NMT) as described by Bruce D. Perry and colleagues at the ChildTrauma Academy and Neurosequential Network: Perry & Hambrick (2008), Perry's pre-final draft chapter for Infant & Early Childhood Mental Health (about 2012, published 2014), Perry & Dobson (2013, Spanish edition of the Ford & Courtois chapter), Barfield, Dobson, Gaskill & Perry (2011), and Perry's current slide deck from the Neurosequential Network (copyright to 2025). The NMT Metrics are licensed clinical practice tools. Here they are described by structure only; no items are reproduced.

What it is. NMT is not a therapy or a technique. Its authors call it a developmentally sensitive, neurobiology-informed approach to clinical problem solving. A certified clinician uses it to assess a person's developmental history and current brain-mediated functioning. The clinician then selects and sequences existing therapeutic, educational and enrichment activities to fit that profile [source: Perry & Hambrick 2008; Perry & Dobson 2013; Perry c.2012]. It sits in the Neurosequential Model family, alongside NME (education), NMC (caregiving) and NM Sport [source: Perry 2025 slides; NZPsS 2020 flyer].

How change happens (the authors' model). Perry & Hambrick hold that neural systems change only when they are activated, in a use-dependent way. Adversity during sensitive periods leaves lower, earlier-developing networks (brainstem, diencephalon) poorly organised, and higher networks build on them. Lasting change therefore needs the following:

many patterned, repeated experiences;
aimed at the lowest poorly functioning level first, then moving up in developmental order;
delivered within safe relationships across the person's whole daily life, not only in therapy hours [source: Perry & Hambrick 2008; Perry c.2012].

These neurobiological mappings are the authors' explanatory model. The developers present them as a heuristic, citing "all models are wrong, but some are useful" (Douglas 2021 quoting Perry, after Box). [uncertain: the model's brain-region assignments are simplifications by the authors' own account.]

NMT was developed mainly for maltreated and traumatised children. Its Metrics now also include adult cases, as in a 2023 report for a 24-year-old [source: Miller 2026]. NMT does not itself include a trauma-memory processing procedure. Where trauma-focused therapy is indicated, it is one of the higher-level (cortical) options the plan sequences in.

2. Framework

NMT is organised as an assessment–recommendation–reassessment cycle rather than as fixed treatment phases. Perry & Hambrick frame it in three parts: where the child has been, where the child is, and where the child should go [source: Perry & Hambrick 2008].

Stage 0: Clinician certification. Only certified clinicians use the Metrics. Certification runs in stages. Phase I includes modular learning, book study, study groups, case presentations and monthly Network calls. Later phases and trainer tracks follow, and there is an ongoing fidelity process. One account gives about 90 hours of training [source: Perry & Dobson 2013; Perry c.2012; Miller 2026; Perry 2025 slides]. Perry & Hambrick name the shortage of senior clinicians able to lead staffings as "the major impediment" to spreading the model.

Stage 1: Developmental history ("where the person has been").

Goal: estimate a developmental load and find which networks were likely compromised, based on when adversity occurred.
Content:
- Part A: the timing, nature, severity and pattern of adverse experiences, plus genetic and epigenetic factors.
- Part B: relational health across development, meaning bonding and attachment, family and community supports.
Gaps in history: where history is incomplete, reconstruct it conservatively, so that risk is, if anything, underestimated [source: Perry c.2012; Perry & Dobson 2013].

Stage 2: Current functioning ("where the person is").

Goal: build a Functional Brain Map.
Part C: rates current central nervous system functioning on 32 brain-mediated functions. These are grouped by their "final common" region: brainstem, diencephalon/cerebellum, limbic, and cortex/frontal cortex. Each is compared with age-typical peers and colour-coded from severe impairment (red/pink) through moderate (yellow) to typical (green).
Part D: rates current relational health with family, peers, school and community.
Who rates it: ideally an interdisciplinary staffing led by a senior clinician.
Outputs:
- four domain scores: sensory integration, self-regulation, relational, cognitive;
- the Cortical Modulation Ratio (CMR), an index of top-down cortical capacity relative to lower-network dysregulation;
- a Caregiving Challenge Estimator (caregiving resources, demands and reserve) [source: Perry & Hambrick 2008; Perry c.2012; Perry & Dobson 2013; Perry 2025 slides].

Stage 3: Recommendations ("where to go"). Recommendations come in a fixed order:

The therapeutic web: school, childcare, extended family, culture and faith community.
The family: caregivers' own needs and psychoeducation.
The client: activities in the four domains.

Each domain item is sorted by percent of age-typical functioning [source: Perry c.2012; Perry & Dobson 2013]:

Essential: below 65%;
Therapeutic: 65–85%;
Enrichment: 85% and above.

Start at the lowest level of significant impairment, and defer higher-level work that the person cannot yet use.

Stage 4: Implementation and dosing. Implementation runs for months, with activities spread through the day across the therapeutic web. There is no session count. Perry & Hambrick describe the work as "long, frequent" and not time-limited, and say that weekly sessions alone are "rarely enough" [source: Perry & Hambrick 2008]. Case examples run for about a year or longer between assessments [source: Perry c.2012; Perry & Dobson 2013].

Stage 5: Reassessment and moving up.

How: repeat the Metrics and compare maps across dates. Perry & Hambrick give six months apart as an example; the published cases repeat at about one year [source: Perry & Hambrick 2008; Perry c.2012; Perry 2025 slides].
When to move up: move upward "as improvements are seen" in the lower system [source: Perry & Hambrick 2008].
Readiness for cognitive work: the explicit threshold for cognitive-predominant work, such as TF-CBT, insight therapy or academic tutoring, is a CMR above 1.0. For comparison, a typical 9-year-old scores about 4.7 [source: Perry & Dobson 2013; Perry c.2012].
Readiness for relational work: relational and play work generally needs some improvement in self-regulation first [source: Perry & Hambrick 2008].

3. Guiding principles

Use-dependence (activity-dependence). Networks change only by being activated in patterned ways. In practice: target the specific system that drives the symptom, and give it many repetitions [source: Perry & Hambrick 2008; Perry 2025 slides].
Hierarchical, sequential development (bottom-up). Lower networks organise first, and higher ones depend on them. In practice: begin with the lowest significantly impaired level, and do not lead with talk therapy when regulation is poor [source: Perry & Hambrick 2008; Perry & Dobson 2013].
Neurodevelopmental timing. Adversity has different effects depending on when it occurred. In practice: map adversity against age, not just count it. Early insults point to brainstem and diencephalic targets [source: Perry & Hambrick 2008; Perry 2025 slides].
State-dependence. Which functions are available depends on arousal state. Perry's continuum runs: calm (neocortex, abstract thinking), arousal or vigilance (cortex, concrete), alarm (limbic, emotional), fear (midbrain, reactive), terror (brainstem, reflexive). In practice: check the person's state before every demand. A frightened person cannot use reasoning, and attends to nonverbal threat cues more than to words [source: Perry 2003; Perry 2025 slides].
Sequence of engagement: regulate, relate, reason. Engagement goes through lower regions first, then relational, then cortical. In practice: in any interaction, settle the body first, connect second, and discuss or teach last [source: Perry 2025 slides; secondary illustration: Douglas 2021].
Two adaptive response patterns. Under threat, people may move along a hyperarousal continuum (vigilance, resistance, defiance, aggression) or a dissociative continuum (avoidance, compliance, dissociation, fainting). Most use a mix. In practice: read compliance and "zoning out" as possible threat responses, not cooperation [source: Perry 2003].
Pattern of stress. Predictable, moderate, controllable stress builds resilience. Unpredictable, extreme or prolonged stress sensitises. In practice: deliver challenge in small, predictable, controllable doses [source: Perry 2025 slides].
Relational health buffers adversity. Connectedness buffers adversity and is the medium of change. Perry & Hambrick write that "the relational environment of the child is the mediator of therapeutic experiences." In practice: score and strengthen relational supports alongside symptoms [source: Perry & Hambrick 2008; Perry 2025 slides].
Relational contagion. Regulation and dysregulation spread between people. In practice: the adult's own state is an intervention, so regulate yourself first [source: Perry 2025 slides].
Developmental, not chronological, age. Development is often "splintered": one young person may reason like a 10-year-old and regulate like a 5-year-old. In practice: set each expectation by the domain's developmental level [source: Perry c.2012; Perry & Dobson 2013].
Balance developmental and age appropriateness. In practice: choose activities that hit the developmental target without humiliating an older client (see Section 5) [source: Perry & Hambrick 2008].
"Goldilocks" novelty. Experiences should be neither too familiar nor too complex. In practice: introduce novelty gradually [source: Perry c.2012].
The six Rs of therapeutic experiences. Activities should be developmentally relevant, relational, repetitive, rewarding, rhythmic and respectful of the child, family and culture. In practice: screen every planned activity against all six [source: Perry c.2012; Barfield et al. 2011].
Dose: frequent and brief beats rare and long. In practice: prefer several short regulating episodes a day, spread across the therapeutic web, to a single weekly hour [source: Perry & Hambrick 2008; Perry c.2012; secondary: Johannessen c.2019, presenting Perry's slides].
Therapeutic web over therapy hour. In practice: plan for every influential adult and peer, and make school and caregivers part of the treatment [source: Perry & Hambrick 2008; Perry & Dobson 2013].
Caregiver capacity first. It is "unrealistic" to expect caregivers to lead healing while their own needs go unmet. In practice: assess caregiver stress and build in respite and self-care before adding tasks [source: Perry c.2012; Perry & Dobson 2013].
Sensitivity to both intimacy and abandonment. In practice: calibrate closeness. Offer connection; do not force it [source: Perry c.2012; Perry & Dobson 2013; secondary: Douglas 2021].
Equifinality and multifinality. Many paths can lead to the same presentation, and the same history can lead to different outcomes. In practice: individualise the plan rather than prescribing by diagnosis [source: Perry 2025 slides].
NMT complements, never replaces. It is not a standalone psychiatric or psychological evaluation. In practice: combine it with standard assessments (cognitive, academic, symptom and parenting-stress measures) [source: Perry c.2012; Perry & Dobson 2013].
"Some, but not all". The plan suggests a few well-chosen activities, not everything that could help. In practice: avoid overloading families [source: Perry & Dobson 2013].

4. Intervention inventory

NMT's own procedures are assessment, formulation, sequencing, dosing, therapeutic-web work and reassessment (4A–4B). The client-level "interventions" (4C–4F) are existing activities and therapies that NMT selects and orders. They are listed here as the NMT sources recommend them. Deliver each one under its own training standards; NMT supplies the when, how often and in what order [source: Perry & Hambrick 2008; Perry & Dobson 2013].

4A.1 Developmental history mapping (Metrics Parts A and B)

Purpose / when: at intake, to estimate the developmental load and which networks were likely disrupted by the timing of adversity, and to record relational buffers across development.
Steps:
1. Gather history from records, caregivers and the client: prenatal and perinatal factors, adverse events, placements, losses, medical trauma.
2. For each adversity, note the age band, nature, severity and pattern (chronic or episodic, predictable or unpredictable).
3. In parallel, record relational health in each period: attachment figures, family and community supports.
4. Where information is missing, reconstruct conservatively.
5. Enter the data into the licensed web-based Metric to produce the risk estimate [source: Perry c.2012; Perry & Dobson 2013; Miller 2026].
Example language (illustrative): "I'd like to understand not just what happened, but when it happened and who was there for you at each stage, because timing and support both shape how someone's system develops."
Watch for: retraumatising detail. History-taking needs facts and timing, not narrative re-experiencing [synthesis]. Also watch for gaps that cover the earliest years, which matter most here.

4A.2 Current functional rating and interdisciplinary staffing (Parts C and D)

Purpose / when: at intake and at each reassessment, to rate current brain-mediated functions against age-typical peers and to rate current relational health.
Steps:
1. Collect observations from several settings: home, school, therapy, OT, speech and language, medical (including resting heart rate, sleep and feeding).
2. In a team staffing led by a senior clinician, rate each of the 32 functions (scored on a 1–12 scale in the current version) and the relational health domains.
3. Assign each function to its final common brain region.
4. Record confidence levels where data are thin [source: Perry & Hambrick 2008; Perry & Dobson 2013; Miller 2026].
5. With adults, the client can take part in reviewing their own history and functioning, and a family member can complete a parallel Metric [source: Miller 2026].
Example language (illustrative): "Let's look at how things go when you're calm versus stressed: sleep, startle, focus, getting along, learning."
Watch for: rating from one setting only, and rating someone during an unusually dysregulated period without noting state [synthesis].

4A.3 Functional Brain Map, domain scores and CMR: formulation and feedback

Purpose / when: after rating, to identify strengths and vulnerabilities, set the starting level and explain the plan.
Steps:
1. Read the colour map from bottom to top and find the lowest level with significant impairment (red/pink).
2. Note the four domain scores against age-typical scores, and the CMR. A CMR below 1.0 means cognitive-predominant work is premature.
3. Note splintered development, where domains differ sharply.
4. Use the map with caregivers, teachers and the client to reframe behaviour as state and development rather than wilfulness, and to set developmentally matched expectations [source: Perry & Hambrick 2008; Perry c.2012; Perry & Dobson 2013; Douglas 2021].
Example language (illustrative): "This map shows that her thinking skills are close to her age, but her stress-regulation system works more like a much younger child's. That's why reasoning with her mid-meltdown doesn't work, and why we start with rhythm and calm."
Watch for: families taking the map as a brain scan. It is a functional estimate, and the authors call the comparisons with SPECT imaging preliminary [source: Perry & Dobson 2013]. Also guard against fatalism; stress that the map changes with experience [synthesis].

4A.4 Writing and sequencing recommendations

Purpose / when: after formulation, to turn the map into a staged plan.
Steps:
1. Write recommendations in order: therapeutic web, then family, then client.
2. For the client, sort targets into essential (below 65% of age-typical), therapeutic (65–85%) and enrichment (85% and above).
3. Start with essential sensory-integration and self-regulation targets.
4. Explicitly defer activities the person cannot yet use. In the published cases this meant pausing peer-heavy activities, speech and language work, TF-CBT and some school demands for a period.
5. Choose "some, but not all" candidate activities, matched to the family's resources and the person's interests.
6. Check each against the six Rs [source: Perry c.2012; Perry & Dobson 2013].
Example language (illustrative): "We're not dropping therapy or school for good. We're putting first the things his body needs, so the talking and learning work can stick when we add them back."
Watch for: deferrals that become exclusions. Agree a review date and a graded return plan [synthesis; Perry c.2012 describes a graded school re-entry].

4A.5 Dosing plan

Purpose / when: for every recommended activity, to specify frequency, duration and who delivers it.
Steps:
1. Prefer short, frequent, patterned episodes spread through the day over long, rare ones.
2. Write each as who, what, when, how long and how often.
3. Embed doses in existing routines (morning, transitions, bedtime).
Published examples: each is a recommendation for a single case, not a standard:
- essential somatosensory activities several times daily for about 7–8 minutes each;
- transition practice for about 4–5 minutes several times a day;
- exploration for at least 15 minutes three times a day [source: Perry c.2012];
- in an adult case: rocking or swinging up to 10 minutes 2–3 times a day, calming music 10 minutes twice a day, and breathing practice 3–4 times a day [source: Miller 2026].
Secondary account of Perry's dosing teaching: brief bursts of a few minutes, repeated, with consolidation time between them. A single three-minute interaction made of many brief moments of attuned connection can count as a therapeutic dose [source: Johannessen c.2019; uncertain, not verified in a Perry-authored text].
Example language (illustrative): "Instead of one long calming session, let's aim for a few short rocking-and-music breaks: after breakfast, after school, before bed."
Watch for: doses dropped when things are going well. Regulating doses are meant to be proactive, not only used in crises [source: Douglas 2021; synthesis].

4A.6 Reassessment and plan revision

Purpose / when: at planned intervals (six months is one published example; about a year in the published cases) or when progress stalls.
Steps:
1. Repeat Parts C and D.
2. Compare maps, domain scores and CMR across dates.
3. Move recommendations upward where lower levels have improved: add relational, then cognitive, work.
4. Re-sort any domain that has not moved.
5. Share the comparison with the team and family [source: Perry & Hambrick 2008; Perry c.2012; Perry 2025 slides].
Example language (illustrative): "Her regulation scores have moved a lot this year, and the ratio is now high enough that we can start structured trauma-focused work."
Watch for: attributing change to one element. The authors note they cannot separate which component helped [source: Perry c.2012; Perry & Dobson 2013].

4B.1 Therapeutic-web psychoeducation (school, childcare, extended family, community)

Purpose / when: first in every plan, so that the adults around the person hold developmentally matched expectations and respond in regulating ways.
Steps:
1. Explain state-dependent functioning, the regulate–relate–reason sequence and the person's specific sensitivities (impulse control, need for control, sensitivity to intimacy and abandonment).
2. Translate the map into concrete expectations for each setting.
3. Agree on fewer transitions and a consistent primary adult.
4. Warn against the frustration–blame cycle, in which adult anger confirms the child's sense of being stupid or unwanted [source: Perry & Dobson 2013; Perry c.2012].
Example language (illustrative): "When he looks defiant, he's most likely in alarm. Lower your voice, get beside rather than in front of him, and save the conversation for later."
Watch for: staff using the model to excuse every behaviour, or using "regulation" as a new form of control. Pair it with clear, calm limits [synthesis].

4B.2 Caregiver support: self-care, respite and regulation planning

Purpose / when: whenever the Caregiving Challenge or relational health scores show strain. That is often, because caregivers deliver most of the doses.
Steps:
1. Assess caregiver stress, sleep, health and support.
2. Build in respite and a self-care plan (sleep, exercise, social support).
3. Help caregivers map their own regulation: what dysregulates them and what restores them.
4. Include siblings and extended family in psychoeducation so they can offer patient, positive contact [source: Perry c.2012; Perry & Dobson 2013; Perry 2025 slides].
Example language (illustrative): "You can't pour calm into her if you're running on empty. What would give you two hours off this week?"
Watch for: caregiver shame. Frame self-care as part of the treatment plan, not an indulgence [source: Perry & Dobson 2013].

4B.3 Environmental structuring: predictability, a primary relational anchor, minimal transitions

Purpose / when: when sensory-integration and self-regulation scores are low, so that the daily environment stops repeatedly triggering alarm.
Steps:
1. Simplify the schedule and reduce the number of transitions.
2. Assign one consistent primary adult. In one case this was an in-room aide at school.
3. Make routines predictable and preview changes.
4. Plan exits from overwhelming settings [source: Perry c.2012; Barfield et al. 2011; Douglas 2021].
Example language (illustrative): "Each morning, Ms. K will meet him at the door and walk him through the same three steps."
Watch for: rigidity. Novelty is reintroduced gradually once regulation improves (4D.3).

4B.4 Medication review with the prescriber

Purpose / when: in published cases, psychotropic regimens begun before NMT were reviewed and, under close behavioural monitoring, tapered by the prescriber once regulation improved [source: Perry c.2012; Perry & Dobson 2013].
Steps:
1. Share the map and the regulation plan with the prescriber.
2. Agree how behaviour, sleep and heart rate will be monitored.
3. The prescriber leads any changes.
Example language (illustrative): "We'll send the prescriber our weekly sleep and calm-time log so any medication decisions are based on what we're seeing."
Watch for: non-prescribers recommending changes. That is outside a psychotherapist's role [synthesis]. Taper decisions belong to the prescriber.

4C.1 Patterned, rhythmic somatosensory activity (brainstem and diencephalon targets)

Purpose / when: essential-level sensory-integration or self-regulation impairment: poor arousal regulation, attention, impulsivity, sleep, or high resting heart rate.
Activities named in the sources:
- music, and music with movement;
- dance and drumming;
- yoga, especially breathing;
- rocking or swinging, walking or running;
- in an adult plan: dribbling a basketball, weight-lifting, gardening, raking and other rhythmic physical chores [source: Perry & Hambrick 2008; Perry c.2012; Barfield et al. 2011; Miller 2026].
Steps:
1. Pick one or two activities the person already likes. The activity must be rewarding.
2. Set a short, frequent dose (4A.5).
3. Have a familiar, calm adult take part alongside, which makes the activity relational.
4. Keep the rhythm steady and predictable. One secondary source suggests calming music at about 60–80 beats per minute [source: Douglas 2021; uncertain as an NMT specification].
5. Schedule doses proactively, before known stress points.
Example language (illustrative): "Let's do our three songs on the swing before homework, same as yesterday."
Watch for / working signs:
- Look for settling of breathing and movement during the activity, shorter and less frequent meltdowns, better sleep, and a lower resting heart rate. In one case, resting heart rate fell from 132 to 102 over the treatment period [source: Perry c.2012].
- Overstimulation (speeding up, giddiness) means the rhythm or intensity is too high [synthesis].

4C.2 Therapeutic massage and graded touch tolerance

Purpose / when: somatosensory organisation, and building tolerance of nurturing touch where touch has become aversive [source: Perry & Hambrick 2008; Perry c.2012; Barfield et al. 2011].
Steps:
1. Deliver only through appropriately trained and qualified practitioners or coached caregivers, under clear policy [synthesis].
2. Get consent from the child, in a developmentally appropriate form, and from the guardian. Agree a stop signal [synthesis].
3. Start with the least intrusive contact the child chooses, for example hands or back over clothing, for very brief periods.
4. Increase gradually as tolerance grows. In one case, graded touch exercises turned touch from aversive into regulating [source: Perry c.2012].
Example language (illustrative): "You're the boss of your body. Do you want hand-squeezes or back-drawing today? Say 'stop' any time and we stop."
Watch for:
- signs of a dissociative response, such as stillness, compliance or a blank look, which are not the same as comfort [source: Perry 2003 on the dissociative continuum];
- any touch that echoes the abuse history;
- safeguarding policy. Psychotherapists should normally not provide touch themselves outside their training and licensure [synthesis].

4C.3 Sensory diet and proprioceptive / deep-pressure input (with OT)

Purpose / when: to organise sensory integration across home and school.
Steps:
1. Refer for an occupational therapy evaluation.
2. Implement the OT's sensory diet consistently in all settings. It may include deep pressure, proprioceptive work, weighted items or resistance bands.
3. Provide regulating tools such as headphones, fidgets and a calm corner or "nest" [source: Perry c.2012; Miller 2026; Douglas 2021].
Example language (illustrative): "When the room gets loud, your headphones and the bean-bag corner are always allowed."
Watch for: tools used only as rewards or withheld as punishment. They should be available unconditionally [synthesis].

4C.4 Sleep rituals and sleep hygiene

Purpose / when: poor sleep, an early-level (diencephalic) function.
Steps:
1. Set a predictable bedtime sequence with the same steps in the same order.
2. Include rhythmic soothing such as rocking, songs or calm music.
3. Reduce stimulation in the hour before bed [source: Perry c.2012; Miller 2026].
Example language (illustrative): "Bath, two books, song, lights down. Every night, the same."
Watch for: separation fears at night. Calibrate the caregiver's presence to the child's sensitivity to abandonment [synthesis].

4C.5 Breathing practices

Purpose / when: self-regulation, once the person can follow a simple instruction. Yoga breathing and box breathing are named [source: Perry & Hambrick 2008; Miller 2026].
Steps:
1. Teach the practice when the person is calm.
2. Practise briefly several times a day.
3. Cue it early when arousal rises; never at peak terror, when the cortex is offline [synthesis based on Perry 2003].
Example language (illustrative): "Breathe in for four with me, hold, out for four. Let's do three rounds."
Watch for: breath-holding or dizziness. Some trauma survivors find breath focus activating [synthesis].

4D.1 Transition supports and transition practice

Purpose / when: dysregulation at transitions.
Steps:
1. Use a consistent transition song or cue.
2. Preview what comes next.
3. Rehearse transitions briefly several times a day when the child is calm. One case used about 4–5 minutes per practice [source: Perry c.2012; Douglas 2021].
Example language (illustrative): "When the clean-up song finishes, we'll walk to the table together."
Watch for: too many transitions in the day. Reduce their number as well as supporting them (4B.3).

4D.2 Learning internal cues (body-state awareness)

Purpose / when: later self-regulation work, as the cortex comes online: learning to notice rising arousal early. Named in an adult NMT plan [source: Miller 2026].
Steps:
1. After regulating activities, name the body signals together.
2. Link each signal to a chosen regulating action [synthesis].
Example language (illustrative): "Where did you feel it first, your tummy, hands or face? Next time we'll take a swing break when the tummy starts."
Watch for: asking for introspection during alarm. Do this work only in calm states [source: Perry 2003; synthesis].

4D.3 Graded reintroduction of novelty and settings

Purpose / when: after initial stabilisation, to expand tolerance of new environments without sensitising the person.
Steps:
1. List settings from least to most demanding.
2. Step up slowly. One published sequence went: back yard, front yard, the block, short car rides, watching the playground from the car, walking on the playground, then brief school visits.
3. Move to the next step only when the current one is calm.
4. Keep the primary adult present throughout [source: Perry c.2012].
Example language (illustrative): "Today we'll just drive past school and wave. Tomorrow maybe park and watch for two minutes."
Watch for: steps that are too large, shown by return of alarm signs. Drop back one step. This follows the Goldilocks and controllable-stress principles [source: Perry c.2012; Perry 2025 slides].

4E.1 Parallel play and side-by-side activity

Purpose / when: early relational (limbic) work. Start with an invested adult and later add a peer [source: Perry c.2012; Miller 2026].
Steps:
1. Do the same activity beside the person, such as puzzles, building or a car project.
2. Keep demands for eye contact and talk low.
3. Follow their lead.
4. Hold doses short and daily. One adult plan used about 15 minutes a day.
5. Add one peer only when one-to-one contact is reliably calm.
Example language (illustrative): "I'll just work on my puzzle here next to you."
Watch for: pulling away when closeness increases. This can reflect intimacy sensitivity, so give space and return [source: Perry & Dobson 2013; Douglas 2021].

4E.2 Relational play therapies: play, art, Filial Therapy, PCIT

Purpose / when: therapeutic-level relational targets, once basic self-regulation is improving [source: Perry & Hambrick 2008; Perry c.2012].
Steps:
1. Select the modality to fit the developmental level.
2. Deliver it to that modality's own standard.
3. In the therapeutic preschool application, Filial Therapy trained parents to lead child-directed play with empathic responses and limit-setting. Staff were coached with video feedback and bug-in-the-ear [source: Barfield et al. 2011].
Example language (illustrative, Filial-style reflecting): "You're making the truck crash again and again. That looks like a big feeling."
Watch for: play escalating into dysregulation. Pause the play and return to rhythm (4G.1) [synthesis].

4E.3 Animal-assisted activity

Purpose / when: relational and regulatory targets, especially where human closeness is threatening. Animal-assisted therapy and daily work or care with dogs appear in NMT plans [source: Perry c.2012; Miller 2026].
Steps:
1. Use certified programmes or supervised animal care.
2. Make it a regular, short, predictable activity [synthesis].
Example language (illustrative): "Your job today is brushing Max. He likes slow, steady strokes."
Watch for: allergies, fear of animals, and any history of harming animals [synthesis].

4E.4 Brief attuned relational "doses" across the day

Purpose / when: throughout. Many short moments of warm, present, non-judging contact from people in the therapeutic web [source: Perry & Hambrick 2008 on consistent nurturing interactions; Johannessen c.2019 secondary].
Steps:
1. Have each adult in the web aim for several short, fully present contacts daily.
2. Make these contacts unconditional, not dependent on behaviour.
3. Offer child-directed play time daily. A secondary source suggests five minutes [source: Douglas 2021].
Example language (illustrative): "I've got five minutes, just for you. What do you want to do?"
Watch for: adults' facial expression and tone. Traumatised children may read neutral faces as angry [source: Douglas 2021; Perry 2003 on nonverbal cues].

4F.1 Cortical-level therapies and learning: CBT/TF-CBT, insight-oriented and psychodynamic therapy, family therapy, speech and language therapy, tutoring, reading, structured storytelling

Purpose / when: enrichment- and therapeutic-level cognitive targets, introduced once relational and self-regulation gains are in place. The CMR threshold is above 1.0 [source: Perry & Hambrick 2008; Perry c.2012; Perry & Dobson 2013].
Steps:
1. Confirm readiness: an improved regulation map, a CMR above 1.0, and stable daily regulating doses that continue alongside.
2. Deliver the chosen therapy to its own manual, including its own trauma-processing readiness checks, dosing within sessions, grounding and closure.
3. In the published case, TF-CBT, speech therapy and tutoring were added after the CMR rose above 1.0 [source: Perry & Dobson 2013].
Example language (illustrative): "Now that your body settles faster, we can start talking through what happened, a little at a time."
Watch for: regression in regulation during trauma-focused work. Increase the lower-level doses rather than pushing on [synthesis]. Memories are the client's experience. NMT gives no basis for memory "recovery" techniques, and none should be used [synthesis per house rules].

4G.1 In-the-moment response: regulate, relate, reason

Purpose / when: any acute dysregulation, in session or in daily life.
Steps:
1. Regulate:
  - Check your own state first.
  - Reduce stimulation.
  - Lower your voice and slow your movement.
  - Get beside the person rather than facing them.
  - Offer rhythm: rocking, walking, a steady pat, humming.
  - Use few words.
2. Relate: once calmer, offer connection and attuned presence without demands.
3. Reason: only when regulated, talk about what happened, what was felt, any repair, and a plan for next time [source: Perry 2025 slides; Perry 2003; illustration in Douglas 2021].
Example language (illustrative): "I'm here. Let's walk." Later: "What did your body feel just before it got big?"
Watch for / working signs: breathing slows, posture softens, and the person can make eye contact or speak in sentences. Consequences or lectures given in the alarm or fear states escalate behaviour [source: Perry 2003; Douglas 2021].

5. Handling problems

The NMT sources name only a few implementation problems: shortage of senior clinicians, too little therapy time, chaotic relational environments, balancing developmental against age appropriateness, and resource limits [source: Perry & Hambrick 2008; Perry c.2012; Perry & Dobson 2013]. Most of the responses below are therefore marked [synthesis].

Stuck: no change at reassessment.

Check, in order:
1. Were doses actually delivered, and often enough? Review logs with caregivers.
2. Is the plan aimed at the lowest impaired level, or did it jump to relational or cognitive work too early?
3. Is the relational environment chaotic? Perry & Hambrick note that children with unstable placements or relational poverty often fail to improve even with evidence-based therapy [source].
4. Is caregiver capacity exhausted?
Response: re-sort targets downward, simplify to fewer activities at higher frequency, and add respite or a stable primary adult [synthesis built on Perry & Hambrick 2008; Perry c.2012].

Apparent resistance or defiance.

Read it first as a state: likely alarm or fear on the hyperarousal continuum. Compliance can sit on the dissociative continuum [source: Perry 2003].
Lower demands, move beside the person, regulate first, and revisit the issue once calm.
With intimacy-sensitive clients, offer connection and let them set the distance [source: Perry & Dobson 2013; Douglas 2021].
Avoid power struggles, which feed the frustration–blame cycle [source: Perry & Dobson 2013].

Overwhelm or dissociation in session.

Stop verbal and cognitive demands.
Orient the person to the present using rhythm and the senses: walking, rocking, a steady beat, holding something cold or textured.
Speak in short, calm phrases.
Do not interpret or explore until regulated [synthesis based on Perry 2003 and the regulate–relate–reason sequence].

Afterwards, lower the session's cognitive load next time and add lower-level doses before and during sessions. If trauma-focused work triggered the episode, slow its pacing according to that model's own protocol. Then ask whether readiness (CMR above 1.0, stable regulation) was in fact met [synthesis; Perry & Dobson 2013 for the threshold].

Non-adherence by caregivers or school.

Usually reflects capacity, not motivation [synthesis aligned with Perry c.2012].
Use the Caregiving Challenge information.
Shrink the plan to the two or three highest-value doses and embed them in existing routines.
Give a simple tracking sheet.
Arrange respite.
Re-explain the rationale using the client's own map [synthesis].

For schools:

Hold a joint meeting with the map.
Name one primary adult.
Write the transition plan into the education plan.

Ruptures (with the client or caregivers).

With a client: regulate yourself first (relational contagion), then repair once the client is calm. Name your part briefly and resume predictable routine. Reliable return after rupture is itself a relational dose [synthesis].
With caregivers: ruptures often follow the clinician implying blame. Re-anchor on state-dependent functioning and on the caregivers' own needs [synthesis; source for caregiver focus: Perry & Dobson 2013].

Modality-specific difficulties.

Age-inappropriate activities for older clients. Perry & Hambrick note the tension between developmental and age appropriateness. Choose dignified equivalents: sport drills, drumming, weight training, gardening or music production rather than infant games. Let the client choose [source: Perry & Hambrick 2008; adult examples in Miller 2026; synthesis].
Overreading the brain map. Present it as a functional estimate, not imaging. Avoid deterministic language such as "brain damage" [source: Perry & Dobson 2013; synthesis].
Deferring school or therapies. In the published cases, school or therapies were paused for months. Weigh educational entitlements and safeguarding, agree it with the school and guardian, document a graded return plan, and never use exclusion as the regulation strategy [synthesis].
Touch. Get explicit consent, use qualified practitioners, give the person control, follow safeguarding policy, and use non-touch alternatives where touch is a trauma cue [synthesis].
Lack of certification or a senior clinician. Do not run or score the Metrics uncertified. The principles (state-dependence, regulate–relate–reason, frequent rhythmic dosing, therapeutic-web psychoeducation) can be applied informally, but do not present this as NMT [synthesis; certification requirement: Perry & Dobson 2013].
Risk and safety. NMT does not replace standard risk assessment. Where there is suicidality, self-harm or ongoing abuse:
- follow standard risk-assessment and safeguarding procedures;
- provide lethal-means counselling (safe storage or removal);
- make mandated reports;
- make safety the first item on the plan [synthesis].
Medication pressures. Coordinate with the prescriber and leave dosing decisions to them [synthesis].
Clinician burnout. Perry's slides apply relational contagion and self-care to helpers too. Use supervision and team staffings [source: Perry 2025 slides; Johannessen c.2019; synthesis].

Sources

Sources: