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The Pediatrician Next Door - Simple Advice on Parenting and Family Health
ADHD Isn’t About Attention? The New Science of Motivation, Focus and Reward
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Does it feel like everybody's on ADHD medication right now? Like everybody has adhd? Is it a thing? Yeah, it's totally a thing. But what is the most confusing part about adhd? That's what I want to talk about today. I'm going to tell you what I find suspicious. It's why a kid can't sit at the table and do their homework or pay attention long enough to finish clearing the dishes. But they can focus on a video game or a basketball shootout for like, all of eternity. If they can focus like that, why can't they just sit and do their homework? This is one of the reasons. ADHD has been so misunderstood for so long because we call it attention Deficit hyperactivity disorder. And most kids don't actually lack attention for things that interest them. And some kids with adhd, they're not even hyperactive. Their minds just wander while they sit in their chair. Yes, teenage girls, I see you sitting there quietly and not listening at all. Are you ready to have your mind blown? I think we were all wrong. ADHD doesn't have anything to do with an attention deficit. The issue is far more interesting. Researchers and doctors are starting to realize that attention is not the problem at all. So what is the problem? Just hold on. I'm Dr. Wendy Hunter, and I'm the pediatrician next door. I'm that doctor friend you call for practical advice about your kid's health. I mix the science of medicine with the reality of parenting. What if we've been wrong about adhd? Let's start with what has been the predominant theory. We've always characterized ADHD as a disorder of attention. And people with ADHD can't focus. We say they're easily distracted, they're impulsive, and sometimes, yes, they are hyperactive. And the treatments we use are stimulant medications. These are often explained as helping people to pay attention. But if you have lived with a child or a spouse with adhd, you already know something's fishy. They pay attention just fine to the things that interest them. Kids can build elaborate Lego worlds. They can memorize every stat of every player on their favorite team. They can sit through an entire movie they love without moving. That's not a brain that can't focus. That's a brain that focuses selectively. So that's where our mystery begins today. What is the other big part of this mystery, though? It's the medications. Why do stimulants work? Well, because, honestly, in my experience, they really do. But it kind of doesn't make sense. ADHD medications work by increasing the availability of certain chemicals, especially dopamine and norepinephrine. And these chemicals regulate three motivation, alertness. Right, and reward. And that alertness part is interesting, and I can't explain this. Maybe nobody knows, but doctors also refer to caffeine as poor man's Ritalin. What is it doing? We know it increases alertness, but it seems to also help people with ADHD to stay on task. I often explain ADHD medications this way. They are like, stick with it drugs. They help the brain stick with tasks that normally don't feel very interesting. They make things like homework and listening in Class or getting started on your chores feel less overwhelming and easier to work through. So this is fascinating. Newer research is giving us a really interesting clue about what is going on in the brains of people with adhd. Scientists have finally been able to look more carefully at exactly where in the brain ADHD medications change activity. And the changes were not strongest in the classic attention networks that they expected to see them in. In one large brain imaging study done Just recently in 2025, the researchers looked at functional MRI scans from about 12 children to see how stimulant medications changed the communication between different areas of the brain. They thought they would see big effects in the brain's dorsal attention network. That's the system involved in consciously deciding where to direct your attention. But that's not what they found. Instead, the medications mostly affected networks involved in reward and motivation. And one important area of the brain was the ventral striatum, which is located deep in the center of the brain. The ventral striatum is the major hub of the brain's reward circuitry, and it's influenced by dopamine. This region of the brain helps it register whether something is interesting, rewarding, and whether it's worth your effort. It's the part of your brain that says, yeah, keep going. It's going to be worth it, and you're going to get a big dopamine hit. Keep going. This area talks to the prefrontal cortex, which is the part of your brain that makes decisions, and that's the area that decides how and in what order to do things. Researchers think that ADHD symptoms come from differences in how these two regions of the brain talk to each other. How the part of your brain that assesses whether something is worth doing talks to the part that says, this is how we're going to do it. And that's not about attention. So when you're trying to do something like homework, the reward system of your brain may not make enough dopamine signals to fully convince your prefrontal cortex into being persistent and finishing that math worksheet. Think about it like you have a crazy friend and they're trying to talk you into something that you don't want to do. People with ADHD have a really lame friend who can't convince them of anything. They're like, nope, I am not going to do that. There might be something better to do. And now I think I'll eat a cookie. That's the brain of an ADHD person. And the rest of us without ADHD are like, yeah, I'll do that. That could be cool anyway. Another interesting study used an FMRI and a slot machine game to look specifically at how people with ADHD anticipate getting a reward. When research subjects with ADHD were not taking their medication, their ventral striatum didn't really respond to cues that predicted that they might get a reward. But after taking methylphenidate, that's one of the ADHD drugs, the activity in their ventral striatum increased at the same time when reward cues appeared in the slot machine game. In other words, the medications seem to help the brain recognize and respond to the expectation of getting a reward. These newer imaging studies also found something else surprising. Stimulant medications changed brain communication patterns in the way that we experience feeling awake and alert. The medications make the brain look similar to what is seen after you've had a really good night of sleep. But the medication didn't change the areas of the brain that are associated with paying attention, which is where researchers assumed they were going to see activity. So the emerging theory is that ADHD medications may not work by boosting attention directly. Instead, they move the brain into a more awake, more motivated state, which is more likely to respond to rewards, which makes it way easier to to handle boring tasks and to persist through things that otherwise don't feel engaging enough to hold your attention. And that's why it looks like they're not paying attention. Okay, are you still paying attention? So the bottom line is that ADHD medications work on the brain system involved with alertness and staying awake, which is why caffeine helps. And the other place is on the part of your brain that likes to gamble an online shop and eat chocolate. And I want to make a side note about dopamine, which we often call the pleasure chemical. It's not quite accurate. It's not so much about pleasure. It's kind of more about motivation and persistence. You know, in a neurotypical brain, dopamine is released when something feels rewarding or meaningful. And that reward can be immediate, like hearing a text notification or winning a game. Or the reward can be delayed, like studying for a future goal. Anyway, dopamine makes your brain feel pretty good. But in adhd, researchers now believe that dopamine signaling pathways may work differently. The new theory is that the ADHD brain has a different threshold for activating these reward and motivation networks. So it takes more stimulation, more newness, maybe a feeling of urgency or emotional intensity before their brain fully engages. My neurotypical brain can push through folding laundry, filling out paperwork, or doing math homework. But for Someone with adhd, they may not make enough dopamine activity to do those things. And that leads us to the next. Is this inborn? Is it genetic? Maybe. Probably. Are young children's brains developing in a world with more stimulation and that's what's changing their threshold? Maybe. Whatever the reason is, this theory does explain one of the most confusing things about adhd, and that's the inconsistency. The reason a child can spend three hours building an elaborate world in Minecraft but can't sit still at dinner is not because of intelligence or ability. The issue is that one activity crosses the brain's engagement threshold and the other one doesn't. This is why researchers now describe ADHD not as a lack of attention, but that is a problem with the regulation of attention. In fact, we see the opposite of inattention in some people with adhd. When something is fast paced, competitive, urgent, or rewarding, the brain can actually enter a state of intense concentration called hyperfocus. People with ADHD describe periods where they become so intensely absorbed in something interesting that they lose track of time. They might forget to eat. They ignore people that are talking to them or stay up too late because they can't pull themselves away from what they're doing. Does this sound like a deficit of attention? I don't think so. Hyperfocus isn't really super attention either. It's more like attention becoming locked onto something that activates their brain's reward system. When a task is really stimulating, dopamine levels rise and the brain can sustain enormous amounts of focus and persistence. And sometimes it's just too much. Adults experience this too. Someone may procrastinate for days on boring paperwork, but then become intensely immersed in a home renovation project, say, or a creative hobby, and work on it non stop into the night. The important thing is that hyperfocus is not voluntary. It's not a voluntary control of your attention. The brain actually has trouble regulating their attention flexibly. It struggles to engage with boring things, but can't disengage from really rewarding activities. This is where stimulant medications seem to help. These medications increase the availability of dopamine and norepinephrine in these brain circuits. Medication turns up the brain's internal signal, so it makes something feel rewarding. It makes the brain experience a boring task like it's really important enough to stay engaged with. So how can we use this to our advantage to treat the symptoms of ADHD that increases interfere with life? That's next.
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Instead, we probably need to ask, how do we make this task feel doable? How do we build in reward? Remember, kids with ADHD are not lazy. They're not defiant. Their brain can only stay engaged in the context of what they're doing. So we have to change that context. This is also why ADHD shows up in school and may not even show up at home. Because school is fully built around delayed rewards. You do the work now for a grade later, for a future outcome that's really hard to feel in that moment. And that works fine for brains that can handle delayed gratification. But for a brain that relies on immediate reward, school is not going to work for them. Video games, on the other hand, are totally designed for the ADHD brain. They give immediate feedback, clear goals, and constant rewards. There's a steady sense of progress, so it is not surprising that kids with ADHD just like thrive in that environment. So maybe we should make school as engaging as a video game. This also explains why people with ADHD do better under pressure and when they have deadlines. People with ADHD need immediate feedback and they like competition and they do well with when a task feels important or meaningful. Where do medications fit into this? I'm sure you've seen in the news the staggering rate that ADHD medications are being prescribed. Are we doing this right? Are they working? There are lots of treatments for adhd, and kids can train their brain to sustain their attention to a task. So can adults. And they can function great without the medications. But I have to tell you, in my clinical experience, for a lot of kids who are struggling in school or having a hard time with sports or at home with symptoms, these stimulant medications are awesome. They definitely improve alertness and wakefulness, and that overlaps with something we don't talk enough about, and that's sleep. You knew this was important, didn't you? I am here to tell you you are right. Kids need sleep. It can help treat their symptoms. And as everyone knows, when you're tired, everything does feel harder. Everything is less rewarding and takes more effort. So part of what we may be seeing in ADHD is also related to how the brain regulates awake, alert and ready. So it can engage. One of the crucial treatments for ADHD is going to bed and waking up at the same time every day. If your instinct was to prioritize sleep for kids, you are right. Now we have a fuller picture. What else can we do? Since we can't just tell a kid to try harder, we can change the emotions surrounding all of this. The hardest part of ADHD isn't really the schoolwork. It's sometimes how bad kids feel about themselves. They might know they're smart and they might know they can do something and they don't understand why they can't make themselves do it. And over time, they can start to think I'm lazy or I'm bad at school. But what if we explain this differently to them? Let's tell them your brain works best when something is interesting, and that's fine. We're going to figure out how to help you with the parts of your life that aren't interesting. Sometimes saying this changes a lot for these kids. One of the most effective strategies is not demanding more effort. It's changing the structure of the task so it's more interesting. Great teachers know how to do this, and they do it all the time with all of their lessons for all of their students. Many kids with ADHD do better when work is interactive or game like. So try this. Use a timer or a beat the clock type challenge when you're asking them to do something. Turn chores into a race, add music or movement, or break homework into small chunks with quick rewards in between even something as simple as using colorful markers or writing on a whiteboard instead of sitting at a desk. And is less boring and can keep them engaged more. Do their spelling words while they're bouncing a ball. That can increase stimulation enough to help the brain engage. Immediate feedback is also really powerful. A kid with ADHD may not do their work for a reward that comes days or weeks later. But they might respond better to a small reward that happens right away. And that doesn't mean you have to bribe them. It means that they need reinforcement to sustain their persistence. And praise is a great reward. Just tell them they're doing a great job regularly. Start a points system for small little chunks of homework they do. Use a visual progress tracker or have them earn certain privileges in steps that can all help to activate their brain's reward pathway. Body movement matters too. Kids with ADHD focus better when they are not forced to sit still. Some do their homework while standing or or chewing gum or using a wobble stool. They can squeeze a fidget or take short breaks for movement. We think movement means that they're not paying attention. But for a lot of these kids, movement helps them increase their alertness and engagement. And interestingly, there are evidence based parent training programs that are built around all these ideas I just listed. They teach you how to make tasks more rewarding so kids can get through them. One of the best known is called the Incredible Years, which teaches parents strategies for increasing positive reinforcement and using routines and emotional regulation and encouraging persistence. This program has been studied in kids with ADHD type behaviors and has shown improvements in hyperactivity regulation, your parenting stress and interactions with your child. And what's important about programs like this is that they take the focus away from punishment and and more towards working with the way the child's brain works. So there it is. What do you think? Do we need to change the name of ADHD to rtdd? Reward Threshold Deficit Disorder? That sounds stupid. Or Ventral striatum Prefrontal cortex Communication difference? That's a mouthful. It's about attention regulation. It's not a deficit. And the hyperactivity part? That's just a kid who's trying to increase their stimulation to satisfy their need for more reward and technology. We didn't even talk about that. That is an entire episode on its own. There's no question that exposure to media changes our baseline need for dopamine. This is just something we need to practice. We have to practice sitting quietly with no distractions. You can reset your dopamine. We really all need to meditate. Honestly, if this episode made you see ADHD a little differently, please share it with someone who might need to hear this. A teacher, a friend, a parent who's in the middle of those homework battles. And if you have questions you want me to explore like this, you can always reach out to me in the contacts listed in the show notes. Thanks for listening. For more from the Pediatrician Next Door, find me on the web at pediatrician next doorpodcast.com if you've got a question question about the weird things kids do, send an email to hellopediatriciannextdoorpodcast.com for a chance to hear your voice on the show. I'm Dr. Wendy Hunter and I'm the Pediatrician Next Door. This show is produced by Red Rock Music. Make sure to subscribe and leave a review wherever it is you're listening. I'll be back next time with more.