How does narrowing an individual's 'window of tolerance' typically manifest behaviorally?

A narrowed 'window of tolerance' describes a reduced capacity to manage emotional and sensory input without becoming dysregulated. Behaviorally, this manifests in two primary ways: hyper-arousal and hypo-arousal. Hyper-arousal occurs when the individual's nervous system is excessively activated, leading to heightened anxiety, agitation, irritability, difficulty concentrating, hypervigilance (being constant....