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
Introduce the three zones
Walk through hyperarousal, window, hypoarousal. Normalize that everyone moves between zones — the question is whether they get stuck.
- 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
Identify the moves
For each zone, name 2–3 regulation moves that work. Hyper needs down-regulation; hypo needs up-regulation.
- 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
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.
Worksheet — Window of Tolerance — provided by TherapistAssist for clinical use. Not a substitute for assessment or treatment.
