ADHD is often associated with difficulties starting and finishing tasks. Case in point: I should be working on finishing my manuscript that is due Friday. But the topic of interest-based nervous systems has caught my interest, so instead of completing the important task, I’m side-questing today and writing about interest-based systems (I know this is all so very meta).
Okay, so ADHD is characterized by difficulty with doing things. But here’s a question psychiatrist Dr. William Dodson asks his ADHD patients:
“If you have been able to get engaged and stay engaged with literally any task of your life, has there ever been anything you couldn’t do?”
This question highlights a core aspect of ADHD that is frequently misunderstood. The challenge often lies not in performing the tasks but in getting motivated and engaged. Dodson notes that most of his ADHD patients answer:
“If I can get engaged, I can do anything.”
Once we are motivated, we can harness immense power, creativity, out-of-the-box problem-solving, and deep focus. The problem is getting ourselves engaged! This is where the concept of the interest-based nervous system comes in.
Dodson’s framework comes from his clinical practice rather than research studies, but many ADHD people find it fits their experience.
Table of Contents
The Interest-Based Nervous System Explained
The term “interest-based nervous system,” coined by Dr. Dodson, contrasts with what he calls an importance-based nervous system, which he describes as typical of neurotypical people. An interest-based nervous system is motivated by tasks based on interest, passion, fascination, wonder, and play. The worlds of passion, curiosity, and interest are essential motivators for ADHD people, and this helps explain why many of us struggle with conventional work and educational structures, which are typically designed around an importance-based model.
Interest-Based vs. Importance-Based Systems
While the interest-based nervous system drives motivation through personal engagement and curiosity, an importance-based system prioritizes tasks based on responsibility and external pressures.
People with importance-based systems are motivated by the significance of a task that is personally meaningful, important to someone else (like a boss or teacher), or linked to potential rewards or consequences. For instance, a task may be deemed important because it is:
Personally significant (importance)
Important to someone they care about (secondhand importance)
Tied to clear rewards or penalties (rewards and consequences)
This system allows people to prioritize and arrange tasks in order of importance, helping them engage on demand, access their abilities when needed, and stay focused until the task is completed. The task doesn’t need to be immediately important for the person to engage with it effectively.
Conversely, those of us with an interest-based nervous system may understand the importance of tasks like cleaning or scheduling medical appointments but find it hard to start them until they become urgent. Our motivation is driven by interest, novelty, play, and challenge.
Research offers a clue about why. A 2011 brain-imaging study linked motivation differences in ADHD adults to the brain’s reward system, the dopamine pathways that help a task feel worth doing. That may be part of why interest gets us moving when importance often doesn’t.
Core Motivators for the ADHD Brain
The ADHD brain thrives on several core motivators. Dr. Dodson used the acronym ICNU (interest, challenge, novelty, urgency) to describe these. Coaches at ImpactParents reworked it into PINCH, which is easier to remember. Their P stands for Play; I like to include Passion too. PINCH stands for:
Passion and Play: Engaging in activities that are enjoyable and intrinsically motivating.
Interest: Focusing on tasks that are inherently fascinating and captivating.
Novelty: Seeking out new, shiny, and exciting experiences to keep us engaged.
Competition (Cooperation or Challenge): Adding an element of competition, working cooperatively, or turning tasks into challenges.
Hurry (Urgency): Completing tasks under time pressure to create a sense of urgency.
Challenges in a Society Designed for Importance-Based Systems
Unfortunately, most societal systems, including schools and workplaces, operate on an importance-based model. This often leads to tension and burnout for ADHD people, as the mismatch between our natural motivators and societal expectations creates significant stress and can lead to shame spirals and low self-esteem. We often don’t understand why things that seem straightforward and simple to others are so hard for us.
Complicating matters, therapeutic interventions designed to support ADHD are often built on the requirements and motivators of an importance/reward nervous system.
When we respond poorly to these interventions, it often deepens the shame about not being able to “do the thing.”
A Few Closing Thoughts
Navigating environments (and interventions) that conflict with the ADHD brain’s motivational systems can lead to shame, exhaustion, burnout, and defeat. Learning how our interest-based nervous system works, and how to work with it rather than against it, can help break these cycles of defeat and burnout.
For practical strategies, How the Interest-Based Nervous System Drives ADHD Motivation walks through each core motivator and how to use it.
Interest-Based Nervous System FAQs
What is the interest-based nervous system?
It’s a way of describing ADHD motivation. Many ADHD people get engaged through interest, novelty, challenge, play, or urgency more than through importance. Once we’re engaged, focus tends to follow.
Who came up with the term?
Psychiatrist Dr. William Dodson coined the term, based on his clinical work with ADHD adults. He contrasts it with an importance-based nervous system, which he describes as typical of neurotypical people.
What does PINCH stand for?
Passion (or Play), Interest, Novelty, Competition (or Cooperation or Challenge), and Hurry (urgency). It’s a more memorable version of Dodson’s ICNU, reworked by coaches at ImpactParents.
Is the interest-based nervous system an official diagnosis or scientific term?
No. It’s a clinical framework, not a DSM term, and it hasn’t been tested as a model in research. Some brain-imaging research has linked ADHD motivation differences to the brain’s dopamine reward system.
Visual Guide
Prefer to engage or share this information visually? Our free NDI Visual Guides are abbreviated, visual-forward highlights of our longer articles. This one, How to Work with Your Interest-Based Nervous System, walks through the PINCH motivators and how to build your own “user manual.”
Additional Resources
How the Interest-Based Nervous System Drives ADHD Motivation The core motivators, with practical ways to use each one
How the Interest-Based Nervous System Shapes ADHD Motivation and Burnout Where motivation and burnout meet
Motivating an ADHD Child: A Parent’s Guide to the Interest-Based Brain A course for parents using PINCH at home
DSM-5 ADHD Criteria: The Full List, Explained in Pictures The ADHD criteria, A through E, in plain language
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References
Dodson, W. (n.d.). How ADHD shapes your perceptions, emotions, and motivation [Presentation]. https://adhd.dk/wp-content/uploads/sites/2/2022/05/Dodson-How-ADHD-Shapes-Your-Perceptions-Emotions-.pdf
Volkow, N. D., et al. (2011). Motivation deficit in ADHD is associated with dysfunction of the dopamine reward pathway. Molecular Psychiatry, 16(11), 1147–1154. https://pmc.ncbi.nlm.nih.gov/articles/PMC3010326/
