Every few months, the internet discovers inner monologue again.

There are viral posts from people who say their minds are “basically quiet,” and equally loud replies from people who cannot imagine what that would even feel like because their thoughts arrive as constant language: commentary, dialogue, arguments, and rewrites of conversations that already happened.

I’m in the second group. I have ADHD and a very strong verbal inner world. Like many other highly verbal individuals, I’m also a writer, and my brain treats life as material. A throwaway line in a casual conversation can come back later as something to dissect or savor.

The Neural Ecstasy is about AI and human psychology, especially as they relate to creativity and writing. This particular post leans hardest into the psychology side with some light AI connections along the way.

As someone with a psychology background, the internal monologue discourse raises some questions for me. These don’t have great popular explanations yet:

  • How does ADHD interact with inner speech?

  • Why do some people replay past conversations over and over while rarely rehearsing future ones?

  • What is the difference between “my brain is tormenting me” and “my brain is just rewatching its favorite scene”?

This article is an attempt to map those questions onto what psychology and neuroscience actually know and then make some inferences beyond the data.

Inner speech: not everyone’s brain runs subtitles

Psychologists use “inner speech” or “self-talk” as a broad label for the verbal activity in our heads. It can show up as:

  • A running commentary (“Okay, I need to send that email and then make coffee”)

  • Imagined conversations with other people

  • A critical or encouraging voice

  • Compressed, almost headline-like phrases rather than full sentences

There’s more variability here than people expect. Some individuals report a very sparse inner voice and rely more on images, spatial thinking, or bodily feelings. Others report constant verbal texture.

My own experience is on the very verbal end. If I try to hold a mental picture in silence, words arrive almost immediately. They name the image, describe it, or start telling a story around it. The language system insists on joining the party.

That maps onto what some researchers describe as individual differences in representational style. In simplified terms, some people lean more heavily on visual imagery, some on spatial/structural representations, some on language. Most of us mix all three, but the weightings differ. In people with little or no visual imagery (aphantasia), language and other codes pick up the slack. On the other end, there are people who report near-constant inner speech and relatively weak imagery.

If it’s not dominated by hostile or ego-dystonic intrusions, a loud inner narrative is a style, not a symptom of anything pathological.

ADHD as an “open tab” system

ADHD shapes the conditions under which that internal monologue runs. Some claim that an internal monologue is more common around ADHD or other types of neurodivergence, but this isn’t well-supported by data. Much of the online discussion of ADHD is not backed by science, and there’s a lot of misinformation.

Across many studies, a few patterns are relatively consistent in ADHD:

  • Executive function and working memory differences. It is harder on average to hold goals in mind, sequence actions, and keep tasks “online” mentally.

  • Greater spontaneous mind-wandering. Attention is more likely to drift off-task without intention. The default-mode network (the set of brain regions active during internal thought) tends to intrude more into task states.

  • Altered reward processing. The systems that respond to anticipated rewards and effort costs are tuned differently, which affects motivation, persistence, and what feels “worth it.”

Subjectively, that often feels like living with too many open tabs. These aren’t just the millions of tabs you probably have open when working on projects with AI like I do. They include many started tasks, half-formed plans, and interrupted thought chains. Things are begun, dropped, picked back up, interrupted again. Very few mental sequences run cleanly from start to finish.

That matters for inner speech because verbal thought loves structure. A complete sentence, a complete conversation, and a complete explanation all have edges, so they can be held and inspected. An incomplete task does not give your ADHD mind that satisfaction.

In a brain that is constantly opening loops and struggling to close them, completed sequences become especially attractive.

Three different kinds of replay

When people say they “can’t stop replaying conversations,” they might be talking about several different phenomena that happen to look similar on the surface.

It helps to separate at least three:

  1. Resumption pressure: There is a long-standing set of findings in psychology suggesting that interrupted tasks stick in memory and exert a kind of pull. People often return to unfinished tasks when given the chance, sometimes without being explicitly told to. The system does not like dangling goal threads. In an ADHD context, with more tasks interrupted by distraction, that “go back and finish this” pressure has more raw material to work on.

  2. Intrusive unfinished thoughts and rumination: This is the version most people think of as a problem. A social interaction went badly; a mistake was made. The mind replays it with a focus on threat, shame, or “what went wrong.” The affect is negative and repetitive, and the loop does not produce new insight. Post-event processing of this kind is well documented in social anxiety and mood disorders.

    Intrusive, unwanted thoughts also show up in obsessive–compulsive disorder (OCD), where the content is often ego-dystonic: aggressive, taboo, or bizarre in ways that clash with the person’s values and trigger compulsive attempts to neutralize or avoid them. Not every unpleasant replay or “cringe memory” is OCD territory, but it’s useful to distinguish between ordinary post-event overthinking and the kind of intrusive thought patterns that are persistent, distressing, and hard to disengage from.

  3. Reward-driven replay and savoring: Much less discussed, but very recognizable, is the tendency to replay moments because they were satisfying. The timing was perfect. A joke landed. A difficult point was phrased clearly. Revisiting those moments produces a mild glow of competence or pleasure and can reinforce the patterns that produced them. From a reinforcement-learning perspective, this is the brain privately marking: “This pattern was good. Do more of this.”

Replay is not automatically rumination

Public discourse tends to flatten all mental revisiting into “rumination,” which is understandably framed as something to be reduced. But the functions are different.

  • Rumination is repetitive, negative, and often increases distress.

  • Savoring is revisiting positive or meaningful experiences and tends to stabilize or increase positive mood.

  • Craft-oriented replay sits somewhere adjacent: it is about learning and refinement, not primarily about mood in either direction.

ADHD doesn’t decide which one you get. It increases the number of half-finished sequences and spontaneous shifts in attention. What happens next depends on temperament, life context, and what you do with the loop when it starts.

One useful question to ask yourself is:
“Is this loop trying to protect me, punish me, or teach me something?”

The answer is not always flattering, but it is usually clarifying.

Improvisers, rehearsers, and when the voice shows up

Another axis that emerged for me while thinking about this is timing.

Some people’s inner speech is heavily anticipatory. Before a difficult conversation or social event, they script extensively in their head: what they’ll say, what the other person might respond, how they’ll counter that. After the fact, they may also ruminate, but a large amount of inner talk happens in advance.

Others lean toward improvisation. They do relatively little pre-rehearsal, rely on in-the-moment verbal fluency, and then do most of their replay after the event. That replay might be anxious (“I sounded ridiculous”) or analytical (“that part worked; that part didn’t”).

In most cases, I fall into the improviser category. I rarely pre-script more than a line or two. I’m comfortable talking on the spot and generating language in real time. Where the inner monologue becomes noticeable is later, when I re-run key moments and examine them.

That pattern fits ADHD reasonably well though you don’t have to be diagnosed to relate. Improvising can be more efficient as it offloads planning into the moment, when adrenaline, context, and stimulation do some of the work for you.

Afterwards, I debrief by replaying the interaction. This is the brain’s way of consolidating what happened and learning from it by extracting patterns and updating the model for next time.

Writer brain: life as draft material

Writers are acutely tuned to rhythm, subtext, pacing, and small social details. We listen for the line that cuts cleanly, the hesitation that says more than the sentence, the way a joke lands in the room.

When that sensitivity is turned on real life, ordinary interactions are processed as if they were dialogue on a page. The brain records them not only as “what happened,” but as “how that was constructed.”

That makes certain moments especially “sticky”:

  • An argument with unusually precise phrasing

  • A mundane exchange that accidentally reveals character

  • A small, awkward beat that feels like a perfect scene fragment

ADHD’s bias toward salience over importance amplifies this. The brain does not necessarily replay what was most consequential. It replays what was most vivid.

From the outside, it looks self-absorbed to rerun one’s own lines. From the inside, it often feels like fieldwork.

A brief detour: prediction machines and dopamine machines

There’s a fashionable but genuinely useful way of thinking about the brain as a prediction machine. At any given moment, it is trying to guess what comes next: the next sensation, the next reaction on someone’s face, the next word in a sentence.

Large language models, in their much narrower way, do something similar when we prompt them: they predict the next token. But what we tend to forget is that we’ve wrapped those prediction engines in dopamine loops. We refresh the chat, chase the next “perfect” answer, skim for the surprising or unhinged line—exactly the kind of salience our own brains already overvalue.

Replay, from this angle, isn’t just random mental noise. It’s the brain re-running sequences that felt rewarding or unresolved and asking, “Was that as good (or as bad) as it seemed? What should I do next time?” In an ADHD-ish system that jumps between threads and hungers for small sparks of interest, rewatching “good footage” is an easy way to squeeze out another hit.

There’s a much bigger argument here about why highly verbal people are so well positioned to work with AI systems built on text prediction, and why writers should probably panic less about being replaced and more about how to exploit that synergy. That’s a separate post. For now, it’s enough to notice that both our brains and our tools are very good at turning tiny moments of salience into loops.

When a loud inner world is just a trait (and when it isn’t)

Putting all of this together, a portrait emerges that feels familiar for a certain slice of people:

  • ADHD or ADHD-adjacent traits

  • A verbal-dominant thinking style

  • Ease with improvisation in conversation

  • Strong replay afterwards, often focused on craft or salience

  • A natural tendency to see life in narrative terms

In that configuration, an “intense internal monologue” and frequent replay are closer to cognitive style than pathology. They can become uncomfortable, especially under stress or when mood drops, but they are not inherently signs that something is wrong.

The line into “problem” territory has more to do with content and impact:

  • Are the loops hostile, shaming, and inflexible?

  • Do they interfere with sleep, work, or relationships?

  • Do they feel compulsive rather than curious or evaluative?

If the answer is usually yes, then we are in a different chapter of the story, one that clinical research and therapy do have language and tools for. If the answer is mostly no, then we are talking about a loud but functional way of thinking.

For people whose minds are quieter, this may look like unnecessary mental labor. For those of us whose minds are not, it is simply the environment we live in.

Closing the loop

The current moment is saturated with takes about ADHD, inner monologues, and “overthinking,” many of them confident and poorly sourced. What the research actually suggests is more modest:

  • People differ widely in how much they think in words.

  • ADHD alters attention, executive control, and reward in ways that change how inner speech is deployed.

  • Replay can serve at least three functions: finishing tasks, processing threat, and reinforcing what worked.

  • For verbally inclined, creative, or writerly minds, that replay is often as much about craft as it is about emotion.

We built our culture around prediction engines: from our own default-mode networks to the LLMs we now talk to all day. Both are very good at looping on the things that felt sharpest, most charged, or most rewarding.

Loud inner monologues and replayed conversations are one local expression of that tendency. In the context of ADHD and a verbal, writerly mind, they are less a glitch than an operating style.

If the thoughts are looping too much, ask yourself, “What is this particular loop trying to do, and do I still need it running?” Sometimes, the only way to close your mental tabs is to close a few in the real world.

Further Reading