What is the window of tolerance?

The window of tolerance is Dan Siegel's name for the zone of arousal in which a person can think, feel and connect at the same time. Above it is hyperarousal (anxiety, panic, anger, racing thoughts); below it is hypoarousal (numbness, fog, shutdown). A window of tolerance worksheet helps a client notice which zone they are in and pick a regulation move that brings them back inside.

Source — Daniel J. Siegel, The Developing Mind (1999); Ogden, Minton & Pain (2006)

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Universal · Psychoeducation

Window of Tolerance

Map your nervous system zones — and what brings you back

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Coined by Dan Siegel. Your window is the range of arousal where you can think, feel, and relate at the same time. Outside the window, the nervous system takes over — and it's not your fault.

Hyperarousal — fight / flight

Anxious, racing, angry, panicky, can't sit still, hypervigilant, overwhelmed.

Window of Tolerance

Present. Curious. Able to think and feel. Can connect, can choose, can rest.

Hypoarousal — freeze / collapse

Numb, foggy, heavy, disconnected, dissociated, can't get going, shut down.

What pushes me out

Triggers, situations, people, times of day.

What brings me back

Movement, breath, music, people, place, smell.

If I'm up — down-regulate
  • Long slow exhale (4 in, 6 out)
  • Cold water on the face
  • Walk, shake, push a wall
  • Name 5 things in the room
If I'm down — up-regulate
  • Stand up. Feet on floor
  • Cold water, strong scent
  • Music with a beat
  • Call someone safe

References & further reading

Conceptual background and further reading, not validation of this handout. Named instruments and methods belong to their original authors; custom prompts and trackers are not validated versions of those instruments.

  • Siegel, D. J. (1999). The Developing Mind. Guilford Press.
© 2026 TherapistAssist · For clinical use · Not a substitute for assessment
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About this worksheet

Dan Siegel's window of tolerance is the most useful single concept in trauma-informed practice. Inside the window, the nervous system can think, feel, and connect at the same time. Above it — hyperarousal — the body is mobilized for fight or flight: racing heart, intrusive thoughts, anger, panic. Below it — hypoarousal — the body is in shutdown: numb, foggy, dissociated, collapsed. Trauma narrows the window; regulation widens it. This worksheet gives clients the visual: three horizontal bands with what each state feels like, looks like, and — critically — what helps shift it. Hyperarousal needs grounding and discharge (TIPP, paced breathing). Hypoarousal needs activation and sensory input (cold water, movement, naming colors). Inside the window, the work can happen. It's the single most-shared psychoeducation tool we publish.

When to use it

  • First session psychoeducation for trauma, complex PTSD, dysregulation.
  • Couples or family work where one partner's hyperarousal triggers the other's shutdown.
  • Tracking sheet: clients mark their state hour-by-hour or day-by-day for a week.
  • Children and teens — the visual lands with developmentally appropriate framing.

How to use it

  1. 1
    Introduce the three zones

    Walk through hyperarousal, window, hypoarousal. Normalize that everyone moves between zones — the question is whether they get stuck.

  2. 2
    Map the client's signs

    For each zone, have the client list 2–3 personal somatic and cognitive signs. What does hyper-arousal look like for them specifically?

  3. 3
    Identify the moves

    For each zone, name 2–3 regulation moves that work. Hyper needs down-regulation; hypo needs up-regulation.

  4. 4
    Use as a check-in

    Start each session: 'where are you in the window right now?' This trains interoception and gives session direction.

  5. 5
    Widen the window slowly

    Effective trauma work happens at the edges of the window, not outside it. The goal across treatment is gradual widening.

Frequently asked questions

What is the window of tolerance?+

A model by Dan Siegel describing the range of nervous-system arousal in which a person can think, feel, and connect simultaneously. Above the window is hyperarousal (fight/flight); below is hypoarousal (shutdown/freeze).

How do you widen the window of tolerance?+

Gradual, paced exposure to manageable activation while keeping access to regulation skills. Somatic experiencing, EMDR, IFS, and skills-based trauma therapies all aim to widen the window over months.

What's the difference between hyperarousal and hypoarousal?+

Hyperarousal is excess mobilization: racing heart, anxiety, anger, intrusive thoughts. Hypoarousal is excess de-mobilization: numbness, dissociation, fog, collapse. Both are nervous-system protections outside the window of tolerance.

How do you bring someone back into the window?+

Down-regulate hyperarousal with grounding, paced breathing, TIPP. Up-regulate hypoarousal with sensory input, movement, cold water, naming colors out loud. Match the move to the zone.

What are signs you are outside your window of tolerance?+

Above the window: racing heart, irritability, panic, feeling flooded, talking fast, being unable to slow down thoughts. Below it: going blank, numbness, heavy limbs, feeling far away or 'switched off', losing words. Many people swing between the two under stress.

Is the window of tolerance the same as the polyvagal ladder?+

They overlap but come from different authors. Dan Siegel's window of tolerance describes a range of arousal with hyper- and hypoarousal on either side. Deb Dana's polyvagal ladder, based on Stephen Porges's polyvagal theory, describes three stacked states — ventral, sympathetic and dorsal. Many therapists use both together.

Can you use a window of tolerance worksheet with kids and teens?+

Yes, with simpler language — for example 'too wound up', 'just right' and 'shut down' — and colours or drawings for each zone. Children usually find it easier to pick their zone from pictures than from words.

Worksheet — Window of Tolerance — provided by TherapistAssist for clinical use. Not a substitute for assessment or treatment.

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