Body of Evidence is an intensely moving and necessary account of what happens when systems demand compliance instead of understanding. Drawing on her journey as the parent of an autistic child with a PDA profile, S.M. Korhonen shows how well-intended systems of care can fail neurodivergent children and what it looks like to push back with persistence, courage, and love. These pages were sometimes painful for me to read as the father of an autistic child who faced similar school‑based trauma, but that is precisely why this book is so important. Parents will recognize themselves, curious and caring educators will see the urgent need for change, and advocates and policymakers will find a powerful body of evidence for ending compliance‑based and restrictive practices that fail our most vulnerable students.

I just finished A Body of Evidence: Disbelief, Hidden Disability, and Systemic Harm, by S. M. Korhonen, and was blown away. Her story so mirrored my experience working in multiple special education programs as a school social worker and my experience advocating for complex neurodivergent learners around the country. It was written in such a clear and powerful way. S. M. articulated thoughts and feelings that I had no words for. I caught myself holding my breath multiple times while reading, just like I often do in school meetings. She outlines the patterns, practices, and beliefs that hinder schools' success in educating PDA and other students through her personal story. Because of that, the book reads like a novel, and I had a hard time putting it down. Although this was not the intent, there is so much to learn from the book for parents, educators, and others who care about children and families. The book is hopeful because it includes what is possible when people understand and build trust. The reader comes away wondering why it needs to be so hard. I would love to see this book read by all education majors at every college and university in America.

Diane Gould of PDA North America referred me this book after she finished it in three days.
It’s titled A Body of Evidence: Disbelief, Hidden Disability, and Systemic Harm by S. M. Korhonen.
I typically struggle to read things I’m asked to (go figure!) but this was such a compelling story from the first chapter I also devoured it in days.
A section that resonated:
“This worked for all three of my kids," one would say. "Yeah, we’ve tried that, but it didn’t work." I would respond. Then I would see the familiar crinkle between the eyebrows, the concentrated gaze, the slight angling of the head, the pursed lips, and the short silence that followed.
Their thoughts were written all over their faces—thoughts I had seen many times by now.
"Are you sure? You’re probably doing it wrong."
Maybe you didn’t tie that swaddle correctly? Did you try this particular brand? Maybe you gave up too soon? Maybe you skipped a step? Are you sure you were calm? Are you sure your tone was appropriate? Are you being consistent enough?
Sometimes these questions were asked out loud, sometimes they were left hanging in that awkward silence. The message was as clear as it was consistent: whatever the challenge was, I should be able to control it somehow—a skill others had already mastered.
The disconnect kept growing. It felt as if my arm had been cut off, and I was bleeding all over the carpet while someone showed me how to care for a papercut. They would sympathize and hand me a band-aid. I would slap it on the gushing stump and watch it fall into the blood.
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I give this five stars and I’m sharing it with anybody and everybody who is skeptical about how transformative low demand/low pressure is for our children

A profoundly moving read that evokes a whirlwind of thoughts and emotions. By the time I finished Chapter 17, 'One Last Try,' I found myself wiping away tears from an impact so deep it is hard to put into words.