Science-Based: The Science Behind Shutdown & Dissociation

Science-Based: The Science Behind Shutdown & Dissociation — Educational Infographic (Printable, A2)

You will receive the printable unwatermarked version of this infographic

A research-grounded visual explaining why internal freezing, autism, and withdrawal are protective autonomic responses — not quiet refusal.

This infographic covers:

• Overload building (brain on high alert, throat tightens, heart races, breathing speeds up, stomach distress, muscles tense) vs. shutdown/freeze (brain slows down, voice disconnects, heart rate drops, breathing slows, body feels numb, muscles go still)
• Five-stage pathway: sensory/emotional load builds → body alarm rises → thinking and language access drop → freeze/shutdown/disconnection → visible withdrawal, mutism, or blankness
• What's happening: shutdown is a nervous-system protective state, not deliberate refusal; the person may still hear more than they can show — outward quiet does not mean inner calm
• What it can look like: going quiet or unable to speak, blank stare, hiding or withdrawing, delayed responses, loss of words, tired/floppy/hard-to-reach presentation
• Why it gets misread: adults may mistake shutdown for ignoring or refusal; pushing for speech or answers can deepen the shutdown
• What actually helps: reduce demands/noise/light/language, offer calm presence and felt safety first, allow silence and low-pressure recovery, use simple reassurance or AAC, reconnect after the nervous system has settled
• Grounded in peer-reviewed research (Porges 2022, 2025; Christensen et al. 2020; Owens et al. 2021; Kearney et al. 2022; Loureiro et al. 2024)

What you get:

• High-resolution PDF, print-ready and scalable up to A2 (420 × 594mm)
• Instant digital download

Perfect for: SEND and clinical training, therapy rooms, staff CPD, parent carer forums, and personal understanding.

For personal, classroom, and professional educational use. Not for resale or redistribution.

© Nonspeaking Autism

Disclaimer:

This resource is intended for educational and informational purposes only. It is designed to support understanding of autism, sensory processing, nervous system regulation, and behaviour from a neurodevelopmental perspective.

The information provided is not medical, psychological, therapeutic, or legal advice and should not be used as a substitute for assessment, diagnosis, or treatment by a qualified healthcare professional.

Every autistic person is unique. Strategies and supports should always be tailored to the individual's needs, strengths, and circumstances.

If a child displays a sudden change in behaviour, severe distress, signs of illness, injury, or behaviours that place themselves or others at risk, seek appropriate medical advice or emergency assistance where necessary.

While every effort has been made to ensure the information is accurate and reflects current understanding, knowledge in autism and neuroscience continues to evolve.

This resource is for the purchaser's personal, educational, or professional use only. It may not be copied, redistributed, resold, edited, shared publicly, or reproduced in whole or in part without prior written permission.

© Nonspeaking Autism 💙