Two people in profile face each other across a glowing vertical boundary. One side is rendered in flowing, organic blues and purples, while the other is structured in warm oranges with circuit-like patterns. The space between them suggests a shared boundary shaped by different ways of perceiving and processing connection, illustrating neurodiverse relationship dynamics.

Boundaries as a Core Element of Neurodiverse Relationship Dynamics™

February 07, 20263 min read

Boundaries as a Core Element of Neurodiverse Relationship Dynamics™

When people talk about boundaries, they often think of rules, limits, or communication strategies—what someone will or won’t tolerate, or how clearly they can say no. Within Neurodiverse Relationship Dynamics™ (NRD™), boundaries are something more fundamental. They are not just interpersonal skills. They are shaped by how different nervous systems perceive self and other in real time.

At their core, boundaries reflect a person’s internal sense of where they end and someone else begins. This sense is not abstract. It is formed through perception—through how the body, emotions, and cognition register the presence of another person. Because neurologies process social information differently, boundaries do not arise in the same way for everyone. What feels obvious and automatic to one nervous system may be delayed, unclear, or cognitively constructed for another.

This is why boundary challenges are so common in neurodiverse relationships—and why they are so often misunderstood.


Boundaries Are Neurologically Shaped, Not Character-Based

In NRD, boundaries are understood as emerging from neurological processing, not from intent, morality, or relational goodwill. Some people experience immediate social feedback through body-based awareness: facial expressions, tone shifts, posture, and subtle changes in emotional atmosphere. This kind of immediacy can support a fluid, moment-to-moment sense of interpersonal space—when to lean in, when to pull back, when something belongs to the other person rather than the self.

Other people experience social information more sequentially. They may rely on observation, memory, learned rules, or reflective reasoning to understand another person’s perspective. Their boundaries are often constructed through cognition rather than felt automatically through the body. This does not make those boundaries weaker or less valid—but it does mean they function differently.

In neurodiverse relationships, these differences can collide. One person may assume that boundaries are mutually felt and implicitly respected. The other may not perceive the same signals at the same time—or may not perceive them at all without explicit feedback. When this mismatch goes unnamed, confusion arises quickly.

What looks like disregard may be delayed perception.
What looks like passivity may be heightened awareness.
What looks like boundary violation may be the absence of shared boundary signals.

NRD does not erase accountability—but it changes the starting point of understanding.


Why Boundaries Come Before Conflict

Many relational struggles that are framed as communication problems or personality clashes are, at their root, boundary issues. But boundaries are often invisible until something goes wrong. By the time a conflict surfaces, people are already reacting to crossed lines, unmet needs, or internal overload—without a shared language for what happened.

Introducing boundaries early in the NRD framework allows relationships to be understood structurally rather than morally. Instead of asking, Who is right? or Who is at fault?, the question becomes:

  • How is each nervous system perceiving interpersonal space?

  • What feedback is available—or missing—in the moment?

  • Where is clarity assumed rather than established?

Without this foundation, later discussions about conflict, repair, or harm can feel personal, blaming, or destabilizing. With it, patterns become more legible—and change becomes more possible.


Boundaries as a Foundation for Understanding Neurodiverse Relationships

Boundaries are not something added on top of neurodiverse relationships. They are part of the architecture. They influence how identity is protected, how attachment forms, how intimacy is negotiated, and how conflict unfolds. They shape every relationship context—from friendships and sibling relationships to parenting and intimate partnerships.

This first exploration of boundaries is not about teaching skills or assigning responsibility. It is about establishing a shared lens: recognizing that boundaries are neurologically mediated and that misalignment does not automatically signal failure.

In the posts that follow, we will look more closely at how boundaries operate across different neurologies and relationship contexts. But before any of that, boundaries must be understood for what they are within NRD: a foundational process shaped by perception, feedback, and the lived experience of different brains trying to relate to one another.

Next Post In This Series: Boundaries by Neurology in Neurodiverse Relationships

Anne MacMillan, MLA is the founder of R.E.A.L. Neurodiverse 10-Step Family Systems Approach, designed to support Level 1 autistic adults and their neurodivergent and neurotypical family members as they come to understand what makes them different, work to improve their relationships, and take action to improve their lives. MacMillan has over 50 years of personal life experience with neurodiverse family systems, over 20 years of personal life experience in a neurodiverse intimate life partnership, and has been professionally supporting autistics and non-autistic adults in neurodiverse close family relationships since 2017.  She has a master's in psychology from Harvard University where she did some of the world's first quantitative research on autism and intimate life partnerships. She self-identifies as a high body empathetic, or a non-autistic neurodivergent with a high level of body empathy.

Anne MacMillan, MLA

Anne MacMillan, MLA is the founder of R.E.A.L. Neurodiverse 10-Step Family Systems Approach, designed to support Level 1 autistic adults and their neurodivergent and neurotypical family members as they come to understand what makes them different, work to improve their relationships, and take action to improve their lives. MacMillan has over 50 years of personal life experience with neurodiverse family systems, over 20 years of personal life experience in a neurodiverse intimate life partnership, and has been professionally supporting autistics and non-autistic adults in neurodiverse close family relationships since 2017. She has a master's in psychology from Harvard University where she did some of the world's first quantitative research on autism and intimate life partnerships. She self-identifies as a high body empathetic, or a non-autistic neurodivergent with a high level of body empathy.

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