Window of Tolerance (Dan Siegel)

A clinical teaching metaphor for the range of emotional or arousal experience within which a person can remain engaged and respond flexibly. It is not a directly measured window or a single established neurobiological mechanism.

The window of tolerance is a clinical teaching metaphor for a range of experience in which a person can remain sufficiently engaged to respond flexibly. It can help describe feeling overwhelmed or unusually disconnected without turning those experiences into character judgments. The window is not a directly measured biological container, and its width is not a demonstrated single mechanism of resilience.

Use the metaphor to discuss what is manageable in this situation, with this task and support. The relevant aim may be a workable conversation or a small next step, not perfect calm. A useful adjustment changes pace, demand, or support in response to the person; it does not require diagnosing them as above or below a universal threshold.

When to use it

When a person finds the metaphor helpful for describing engagement or discussing an adjustment to a difficult interaction or task.

How it can help

Can support conversations about manageable demands, pacing, and support without framing difficulty as a character flaw.