Why Naming Your Child's PDA Behaviour After a Stranger is Backfiring (and What to Do Instead).

Some new clients of mine—lovely, dedicated parents who are doing their absolute best to navigate the beautiful, chaotic, and exhausting world of Pervasive Demand Avoidance (PDA)—recently shared a new strategy they've been trying.

They are using an externalization technique where they name their child’s demand avoidance after a completely separate persona.

Let's say the child's name is Lucy. When a meltdown or resistance hits, the parents say something like: “You can brush your teeth, it’s just Stacy who doesn't want to. Let us show Stacy you can do it.” Or, “Tell Stacy you will not give in to her!”

When I first heard this, my educator radar didn't just beep; it practically staged a full-scale protest. As a mom of three—two of whom are on the spectrum—my parenting philosophy has always been rooted in radical self-acceptance.

 Yes, neurodiversity brings massive challenges, but it also brings profound creativity and an unmatched, beautiful honesty. I don’t want my kids fighting a fictional intruder in their own brains; I want them to understand how their magnificent minds operate.

Naturally, I took this dilemma straight to the source. I asked my eldest, who is 16 and navigates the world with a PDA profile, what they thought of this "Stacy" method. They looked at me with that trademark, razor-sharp autonomy and said:"If you did that to me, I’d feel like you were trying to encourage me to become bipolar."Out of the mouths of babes. But behind that blunt teenage insight lies a very real, very serious psychological truth.

The "Stacy" Paradox: Why Narrative Therapy Fails PDA

In traditional psychology, "externalizing the behavior" is a classic, highly effective tool for conditions like OCD or specific phobias. It turns the problem into an outside entity—"the worry monster"—so the parent and child can team up against it.

But PDA is not an intrusive, unwelcome illness like OCD. It is an inherent neurotype. It is the fundamental wiring of the child's nervous system.When we split a child into "Good Lucy" (the compliant one) and "Bad Stacy" (the demand-avoidant one), we aren't helping them. We are actually creating three significant psychological pitfalls:

1. It Ignites the Threat Response

The core of PDA is an overactive threat response (what clinical psychologists describe as an extreme fight-or-flight reaction to a loss of autonomy). When a parent tells a child to "Tell Stacy you won't give in to her," they are introducing a high-pressure conflict dynamic directly into the child’s internal world. 

To a PDA brain, being forced into a battle with oneself feels like an existential threat, sending their cortisol levels through the roof.

2. It Invalidates Their True Physical Reality

When a parent says, "I know Lucy can do this, it's just Stacy saying no," the child's internal reality is completely dismissed. Their body is telling them it is genuinely unsafe to brush their teeth or go to school. By attributing that panic to a fake persona, we are essentially telling them, "Your real feelings aren't valid; you're just being hijacked."

3. The "Good Child / Bad Mask" Trap

This is the one that keeps me up at night. By framing "Stacy" as the problem, we subtly teach our kids that their authentic boundaries, distress, and protective coping mechanisms are unacceptable.

 This is a direct fast-track to heavy masking, a survival mechanism where autistic children suppress their true selves to please adults.

Research consistently shows that prolonged masking leads to severe mental health crises and autistic burnout down the line.

Flipping the Script: The Low-Demand Realignment

So, what do we do when the teeth need brushing and "Stacy" is apparently holding the toothbrush hostage? We drop the persona and embrace declarative, low-demand language that honors their actual nervous system.
Instead of creating a third person in the room, try shifting the language to these neutral, collaborative observations:

Instead of: "Tell Stacy you won't give in to her."Try saying: "It feels like your body is completely overwhelmed right now. Let's hit pause."

Instead of: "Let's show Stacy you can brush your teeth."Try saying: "Brushing teeth is feeling really heavy tonight. I wonder if we should skip the toothpaste or use a cloth?"

Instead of: "Lucy can do this, it's just Stacy."Try saying: "Your safety radar is on high alert today. Let's figure out how to make this feel safer."

The Takeaway

Our PDA kids don't need to be cured of themselves, and they certainly don't need to be divided into "good" and "bad" halves. They need us to be their external nervous system when theirs is overwhelmed.

The next time a demand causes a meltdown, leave "Stacy" out of it. Look at the wonderful, creative, fiercely independent child in front of you, validate their panic, lower the demands, and weather the storm together. As one whole, perfectly wired human being. ❤️