This episode is a throwback to one of the most popular episodes in the history of this podcast, originally recorded as a live presentation I gave in 2022 at the Miami Sudbury Democratic School. I am releasing it again during September, a month I am dedicating to school and education content, because I keep hearing from teachers, therapists, and parents who are still looking for language to explain what they are seeing in the classroom.

In this presentation I walk through the nervous system mechanism underlying PDA, the two most common paths PDA children take through school systems, and five observable characteristics that often appear regardless of whether a child is more externalized or internalized, age, or a formal diagnosis.

Key Takeaways

• Why Seventy Percent of PDA Children Cannot Access Any School: Two Paths | 00:03:49 The first path is a child who appears completely fine at school, does not qualify for an IEP or a 504, and whose teachers and administrators do not see what the parents are describing at home. But things are escalating at home, basic needs are being impacted, and the parents eventually pull the child from school feeling like no one believes them. The second path is a child whose high social communication skills lead professionals to call them high functioning, and when the behavioral expression of the disability appears, they are labeled as a defiant behavioral problem rather than a child with a nervous system disability. Both paths end in the same place: outside the school system.

• The First Observable Characteristic: Equalizing Behavior | 00:13:26 Equalizing is what the body does when the nervous system has perceived a loss of autonomy and is trying to get back to a place of safety and equality. In a classroom it can look like reflexively touching something after being told not to, changing the rules of an activity, starting a worksheet in the middle, writing words backwards, walking away, putting a head down, or reducing meaningful speech. In a home it can look like targeting a sibling, knocking things over, or saying stop talking every time a parent speaks. What matters most is the adult response in that moment.

• The Second and Third Characteristics: Masking and Undivided Attention | 00:18:08 Masking in PDA takes two forms: the learned social imitation most people understand, and what I call autonomic nervous system masking, where a child is experiencing full fight, flight or freeze internally while appearing calm externally. This is the primary reason PDA goes unrecognized and why parents are disbelieved: the child can look completely typical everywhere except at home, where they feel safe enough for the threat response to surface. The third characteristic is the need for a safe nervous system, meaning these children often cannot engage independently without a co-regulator nearby. My son needed us to draw what was in his brain for months, sitting next to him in an undivided way, before he could return to drawing himself.

• The Fourth Characteristic: The Cumulative Nature of Nervous System Activation | 00:25:17 The ABC framework of antecedent, behavior, consequence does not apply to PDA because the actual causal moment is not the thing that happened right before the meltdown. It is the ten things that happened across the past day, week, or month, each of which registered a small loss of autonomy, building until a small trigger tips the child over. In my son's Montessori school, when a hard moment happens, we never ask what happened right before. We ask what has been accumulating.

• Why Viewing PDA as a Nervous System Disability Changes Everything About Accommodation | 00:00:00 The most important shift I can offer any teacher, therapist, or parent is to put on the nervous system and autonomy lens first, before the sensory lens, before the social communication lens, and before the behavioral lens. When we understand that a child moving toward the campfire after being told to stay back, or refusing to eat the more we encourage them, is the survival drive for autonomy overriding other survival instincts, the accommodation becomes clear: reduce the perception of lost autonomy, provide nervous system safety, and trust that the behavior is not defiance but a subconscious nervous system response to perceived threat.

Relevant Resources

Paradigm Shift Program — My signature program where the full accommodation framework, including the autonomy and nervous system safety tools introduced in this presentation, are practiced live across twelve weeks of coaching.

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