Dysgraphia: Solving It Via Dyslexia (Psychology Today)

Coral PS Hoh, Ph.D., writing in her Unlocking Language blog at psychology-today, 2026-08-09, reviewed by Jessica Schrader. The argument: dysgraphia is a language disorder rather than a handwriting problem, it overlaps heavily with dyslexia, and the intervention research already built for dyslexia is where its treatment should come from.

This is the spoke’s first source on a developmental learning disorder, and its first on writing as a clinical subject rather than as an experience.

The argument

Dysgraphia is defined by a gap, not by penmanship. Hoh gives it as “a persistent discrepancy between a person’s actual vs. expected writing ability” — the brain struggling to turn thought into writing at the expected speed and accuracy. The causes she lists are spread across systems: linguistic, sensory-motor, cognitive, psycho-social, executive.

Bad handwriting can be a symptom of something upstream. Her example is the useful one: a child who cannot hold a word in mind copies it letter by letter, and the effort that consumes leaves nothing for spacing and alignment. The visible defect is in the hand; the failure is in retention.

Writing is mapping speech onto marks. Sounds to letters, words to words, utterances to sentences. Dysgraphia is inefficiency somewhere in that mapping — which is why it shares machinery with reading.

Production is harder than comprehension. Both disorders draw on overlapping language processes, but “production—the act of creation—is more demanding,” which is her account of why some children read acceptably and still cannot compose.

Correct, don’t accommodate. The distinction the piece is built to make: “Extended time, assistive technologies, shorter assignments, and testing through oral means—these accommodations make school life easier but do not address the underlying processing problem.” Her prescription is to run the evidence-backed dyslexia approach first — improve the efficiency of the foundational language processes — and teach the skill after.

The numbers, and what they rest on

Two figures, both attributed to Chung, Patel & Nizami (2020):

“Over a third of children with writing problems also have reading problems and vice versa.”
“And like dyslexia, dysgraphia may affect an estimated 20% of the population.”

The 20% deserves a flag rather than a correction. It is offered as like dyslexia and it is the same figure usually quoted for dyslexia, which is what you would expect either if the two really do co-occur at that rate or if one number has been carried across to the other. The cited work is a review, not a prevalence study, and this wiki has not read it. Record it as cited but unverified, and note that a 20% prevalence is a claim about where a diagnostic threshold was drawn as much as about children.

Its references

Unusually for the popular writing in this corpus, the piece ends with a reference list:

Chung, P. J., Patel, D. R., & Nizami, I. (2020). Disorder of written expression and dysgraphia: Definition, diagnosis, and management. Translational Pediatrics, 9(Suppl 1), S46–S54.
Han, W., & Wang, T. (2025). From motor skills to digital solutions: Developmental dysgraphia interventions over two decades. Children, 12, 542.
Berninger, V. W. (2009). Teaching students with dyslexia and dysgraphia. Brookes.
Berninger, V. W., & Richards, T. L. (2002). Brain literacy for educators and psychologists. Academic.

Four named sources with volumes and pages puts it well above does-language-determine-thought (T4, which cites no study at all) and above the Space Daily and Silicon Canals pieces, which name findings without venues. It does not make the claims verified here — none of the four has been read — but it makes them checkable, which is the property this spoke keeps asking for.

The interest that is not disclosed

Hoh is CEO of EduNational LLC. The article carries no disclosure statement; the affiliation appears in the author bio, with nothing about what the company does.

That matters because of what the piece argues. Its central move is to reject accommodation in favour of correction — and correction is a service someone sells, where extended time is something a school grants for free. Nothing here shows the argument is wrong; Berninger’s remediation research is real and predates the author. But a reader should know that the conclusion and the business point the same way, and the article does not tell them.

This is the second time this corpus has met a clinician whose commercial reach and clinical record sit on the same page (anna-lembke is the first, and the sharper case). The pattern is worth a name it does not yet have.

Tier

T3. Psychology Today is edited and this piece is reviewed and referenced, which is the ceiling for popular writing here — the review is of the writing, not of the science, and the same cap was applied to silicon-canals and space-daily. The undisclosed commercial alignment holds it at T3 rather than lifting it; the reference list is what keeps it from T4.

dysgraphia · dyslexia · coral-ps-hoh · psychology-today · why-writing-feels-hard · sapir-whorf-hypothesis · synthesis