Proofreading with dyslexia — why your brain fills in errors and what actually helps
If you have dyslexia and you struggle to catch your own typos, there is a specific reason — and it is not carelessness. The same compensatory strategy your brain uses to read faster is also what blinds you to the mistakes sitting right in front of you. This guide explains the mechanism and gives you a practical workflow to defeat it.
Why proofreading is harder for dyslexic readers
Everyone misses typos in their own writing. That is partly because your brain already knows what you intended to write, so it prints the intended version over the actual text on the screen. Researchers sometimes call this the "typoglycemia effect" — if the first and last letters of a word are correct, your brain reconstructs the rest automatically. This happens to all readers.
For dyslexic readers, the effect is stronger for two reasons.
First, the phonological processing differences that characterise dyslexia mean that letter-by-letter decoding is slower and more effortful. To compensate, the dyslexic brain leans harder on context, prediction, and whole-word recognition. These compensatory routes are genuinely useful — they allow many dyslexic adults to read at or near typical speed — but they work by skipping over low-level letter detail. That is exactly the detail proofreading requires.
Second, there is a working memory cost. Holding the intended meaning of a sentence in mind while simultaneously checking whether each letter and word is correctly formed demands parallel processing that is taxing. When working memory is under load, the predictive shortcut wins: your brain reads meaning, not letters.
The result is that a dyslexic writer who genuinely knows the correct spelling of a word will still mistype it and then fail to see the error — because their reading brain fills in what the writing brain intended.
The prediction problem in practice
Here is what this looks like in a real document. You type "the manger reviewed the report" when you meant "the manager." You reread your email three times. The word "manger" never registers as wrong, because your brain is parsing at the phrase level: it expects a person in that slot, "manger" starts with the right letters, and the rest of the sentence makes sense. The error passes every quick scan.
This particular class of error — a real word in the wrong place, or a word close enough to the intended one to pass prediction — is also the class that spellcheckers miss. A spellchecker has no objection to "manger." Neither does the grammar checker, because the sentence is grammatically valid. The only way to catch it is to slow your brain down enough that it processes each word as a discrete object rather than a component of anticipated meaning.
Technique 1: switch the font before you proofread
The most effective single change many dyslexic proofreaders make is to read their final draft in a different font from the one they wrote in. This works because your brain's prediction is partly shape-based: it has built a visual model of how your document looks, letter by letter, in the typeface you used. Switching the font breaks that model.
In Google Docs, you can select all text and change the typeface in thirty seconds. In web-based editors, a font-override extension like LexiFont can apply a dyslexia-friendly typeface across the entire interface with one click — useful if you draft in Notion, Substack, or any browser-based tool. Fonts like Atkinson Hyperlegible or Lexend are good choices because their high inter-character differentiation makes letter-level detail harder to skip.
The principle is the same regardless of which font you switch to. The visual disruption is the point. Your prediction engine has to rebuild its model from scratch, and during that rebuild, individual letters get more processing time.
Technique 2: read aloud or use text-to-speech
Listening to your text forces serial, word-by-word processing at a fixed pace. Your brain cannot skip ahead or fill in. It has to process each token in the order the voice produces it.
Most operating systems have built-in text-to-speech (Select All, then use the OS read-aloud shortcut), and browser-based text-to-speech extensions work in editors like Google Docs and Notion. The recommended workflow is to listen while following along with your eyes: the audio anchors your attention to each word while your visual cortex provides a second check.
Errors that text-to-speech catches particularly well: homophones (their/there/they're, affect/effect), missing words (your brain inserts them when reading visually but the TTS simply omits them), and doubled words ("the the").
Errors it misses: punctuation, formatting inconsistencies, and wrong-but-valid-word substitutions like "manger" for "manager" — the TTS will read either without complaint. So text-to-speech and visual proofreading should be used together, not as alternatives.
Technique 3: increase the point size by 4–6pt
Increasing font size forces your eye to move more slowly across each line. The line breaks also fall in different places, which disrupts the visual layout your brain memorised while writing. Some readers find that bumping from 12pt to 17pt — large enough to feel slightly awkward — is enough to slow down prediction and restore letter-level attention. You do not need to keep the enlarged version; resize before proofreading, then restore.
For a related reason, many dyslexic editors find that adjusting line spacing and letter spacing before a final read helps in the same way. More air between characters means each one must be individually resolved rather than inferred from its neighbours.
Technique 4: read backwards, paragraph by paragraph
Reading your document from the last paragraph to the first removes narrative context. You cannot predict what a sentence means because you do not know what came before. Your brain is forced to parse each sentence in isolation, which significantly reduces prediction-based filling. You are not reversing word order within sentences — just reading each paragraph as a standalone block, starting from the end of the document.
This technique is especially useful for longer documents where you have read the early sections so many times that they are almost invisible to you. The final section, which you drafted last and reviewed least, benefits from forwards reading; the opening sections, which are most over-familiar, benefit most from backwards reading.
Technique 5: leave time between drafting and proofreading
The prediction model your brain builds while writing is strongest immediately after you finish. After a night's sleep, or even a few hours on a different task, the model fades. Errors that were completely invisible at the moment of writing become obvious when you return with a fresher read.
This is not a dyslexia-specific strategy — every writing handbook mentions it — but the magnitude of the benefit is larger for dyslexic writers because their prediction effect is stronger. If you cannot leave a document overnight, even fifteen minutes of a different task (answering messages, making a drink, stepping away from the screen) helps. The goal is to break the continuity of the mental model you built while writing.
What grammar and spellcheckers actually catch
Tools like Grammarly, the built-in grammar checker in Word, and browser grammar extensions are genuinely useful — but their coverage is narrower than their confidence suggests. They are good at: standard spelling errors, subject-verb disagreement, doubled words, missing terminal punctuation, and certain classes of wrong-word error where the confusion is common enough to be in their training data (affect/effect, their/there). They struggle with: domain-specific vocabulary, names, intentional stylistic choices that look like errors, and the "manger/manager" class of phonetically close substitution.
Think of a grammar checker as a first pass that catches the easy errors, not a proofreading substitute. Run it first, accept what is obviously right, then apply the manual techniques above for a second pass.
A practical proofreading workflow
- Finish drafting and step away — at least fifteen minutes, ideally overnight. Do not proofread immediately after writing.
- Run the spellchecker and grammar tool — accept clear corrections, skip anything uncertain. This catches the obvious errors first.
- Switch the font — select all text, change typeface (Atkinson Hyperlegible, Lexend, or any font visually different from your draft font). If you are in a browser-based editor, use LexiFont to override the font across the page.
- Listen with text-to-speech — read along visually while the audio plays. Mark anything that sounds wrong; fix after the listen-through.
- Read the last paragraph first, forwards to the start — this is the backwards pass. Pay attention to individual word shapes, not sentence meaning.
- Final check at enlarged size — bump point size by 4–6pt and do one more forwards read, specifically watching for missing or transposed words.
Six steps sounds like a lot. In practice, steps 3 through 5 together take less time than writing a second draft, and they catch the errors that would embarrass you in a sent email or published post.
For high-stakes documents — job applications, client proposals, academic submissions — the most reliable final check is to ask someone else to read it. A second pair of eyes has no prediction model at all for your text, and will catch things every self-review misses. If that is not possible, use the backwards-read technique on every paragraph and increase your point size to genuinely uncomfortable.
Choosing the right environment for proofreading
Proofreading is more cognitively demanding than drafting. You are asking your brain to override a powerful default behaviour. That task degrades fast under distraction: a notification, a conversation in the background, or fatigue from a long writing session significantly reduce catch rates. A few environmental factors that help:
Quiet or consistent background noise (brown noise or rain sounds work better than music with lyrics, because lyrics engage the language-processing system you are trying to use for proofreading). A display at comfortable brightness — dark mode or a warm tint reduces the contrast-induced fatigue that leads to scanning rather than reading. And short proofreading sessions: twenty focused minutes will catch more errors than an hour of increasingly distracted scanning.
Some readers with dyslexia also find that their error-catch rate improves when background colour is adjusted — cream or light grey rather than stark white, which can cause glare-induced text instability for readers who are also sensitive to contrast.
The professional context
Proofreading anxiety is a real and disproportionate burden for many dyslexic adults in professional settings. Emails, reports, presentations — every document is an opportunity for an error to signal incompetence to a colleague who does not know about your dyslexia and is not thinking about neurological diversity.
The honest answer is that no workflow makes proofreading effortless if you have significant dyslexia. What the techniques above do is close the gap substantially. A consistent five-step routine, applied every time, will catch most of the errors that a quick scan misses. And for the highest-stakes documents, building a relationship with a trusted colleague who will do a final read is not a crutch — it is good professional practice for anyone who produces writing that matters.
If you draft and proofread in browser-based tools — Google Docs, Notion, email composers, Substack — LexiFont Pro lets you switch between Atkinson Hyperlegible, Lexend, OpenDyslexic, and Comic Neue across every site with a single click. Using it to change font specifically for the proofreading pass, then reverting to your preferred writing font, takes two clicks and takes the font-switching step from intentional effort to a reflex.