Dyslexia and the Brain: What Parents Should Know
When a child struggles to read, parents often hear things like:
“They just need more practice.”
“They’ll catch up.”
“They’re not trying hard enough.”
“Maybe reading just isn’t their thing.”
But research on dyslexia tells us something very different.
Dyslexia is not about effort, motivation, or intelligence. It is a brain-based difference in how a person learns to read.
And perhaps the most important message for parents is this: with the right instruction, the brain can change.
What Is Dyslexia?
Dyslexia is a persistent difficulty with reading that cannot simply be explained by poor instruction, lack of motivation, sensory difficulties, or overall cognitive ability. Research estimates that approximately 5–17% of children may have developmental dyslexia.
Children with dyslexia may have difficulty with skills such as:
recognizing and manipulating the sounds within words
connecting letters with their corresponding sounds
sounding out unfamiliar words
reading words automatically
reading accurately and fluently
spelling
One of the most common areas of difficulty is phonological awareness—the ability to recognize and manipulate the individual sounds in spoken words. Children with dyslexia may also experience persistent difficulty with reading fluency, causing reading to feel slow and effortful.
Importantly, reading difficulty is not the same thing as low intelligence. Research has found similar patterns of reading-related brain differences in individuals with reading difficulties across IQ levels.
A child can be bright, curious, creative, verbal, and knowledgeable—and still have significant difficulty learning to read.
Reading Is Actually a Language Skill
We sometimes think of reading as primarily a visual task because we use our eyes to look at words.
But reading requires the brain to connect print, speech sounds, language, and meaning.
When children first learn to read, they have to understand that the letters they see on a page represent the sounds they already know from spoken language. Phonological awareness helps children recognize and manipulate those sounds so they can connect them with written letters and words.
Over time and with practice, those connections become faster and more automatic.
For many children with dyslexia, that process does not develop as efficiently.
Dyslexia Really Does Look Different in the Brain
Brain-imaging research has identified differences in the structure and function of the reading network in individuals with dyslexia. These differences have been observed in both children and adults.
Researchers have particularly identified differences within left-hemisphere regions involved in connecting print, speech sounds, and language.
This is important because it reinforces something families need to hear:
A child with dyslexia isn't choosing to struggle.
Reading may genuinely require more effort because the brain is processing written language differently.
We Can See Risk Factors Before a Child “Fails”
One of the most important findings from dyslexia research is that differences associated with reading difficulty can be present before children ever receive formal reading instruction.
Researchers have identified several early skills that can help predict later reading ability, including:
phonological awareness
expressive and receptive vocabulary
letter knowledge
rapid naming
Family history matters, too. Dyslexia is highly heritable, meaning it often runs in families.
These findings are incredibly important because they challenge the idea that we should simply “wait and see.”
We do not need to wait until a child has experienced years of frustration or fallen significantly behind before taking concerns seriously.
The Brain Can Change With Intervention
This may be the most encouraging part of the research.
The brain is plastic.
That means our brains can change in response to learning and experience.
Studies examining reading intervention in individuals with dyslexia have found changes in brain activation alongside improvements in reading-related skills. Research discussed in D'Mello and Gabrieli's review found that intervention was associated with increased activation in reading-related regions of the brain and improvements in skills including phonological awareness and reading fluency.
Some research has even found changes in gray matter and white matter connectivity following intervention.
In other words:
Effective reading intervention isn't simply teaching a child tricks to work around dyslexia. Learning experiences can actually influence the brain systems involved in reading.
But the Type of Instruction Matters
The intervention studies reviewed in the article commonly used systematic, explicit, and intensive instruction in phonological awareness and decoding.
That is very different from simply telling a child to:
“Read more.”
“Try it again.”
“Look at the picture.”
“Guess what would make sense.”
A struggling reader needs to be taught how the written language system works.
Instruction may need to explicitly address speech sounds, sound-symbol relationships, decoding, spelling patterns, word structure, fluency, vocabulary, and comprehension depending on the child's individual profile.
Where Does a Speech-Language Pathologist Fit In?
Reading and writing are deeply connected to language.
Speech-Language Pathologists (SLPs) understand the underlying language skills that support literacy, including phonological awareness, vocabulary, morphology, syntax, verbal working memory, and comprehension.
For some struggling readers, looking only at reading accuracy doesn't give us the whole picture.
A comprehensive evaluation may help determine why a child is struggling and identify the specific language and literacy skills that need support.
For example, two children may both be “below grade level” in reading, but one may primarily struggle with phonological processing and decoding while another has significant difficulties with vocabulary, complex language, and reading comprehension.
Their intervention should not necessarily look the same.
What Should Parents Watch For?
A child does not need to show every possible sign of dyslexia before a parent raises concerns.
Some early warning signs may include difficulty learning letter sounds, recognizing or producing rhymes, breaking words into sounds, blending sounds together, remembering sound-letter relationships, rapidly naming familiar information, decoding unfamiliar words, spelling, or developing fluent reading.
A family history of dyslexia or significant reading difficulty is also important information to share with your child's teachers and evaluators.
Early concerns deserve attention.
The Big Takeaway
Dyslexia is not laziness.
It is not a lack of intelligence.
And it is not something we should simply wait for a child to “grow out of.”
Research shows that dyslexia is associated with measurable differences in the brain's reading network, and some of these differences are present even before formal reading instruction begins. Research also shows us something incredibly hopeful: the brain responds to effective intervention.
The goal isn't to make children work harder at something that already feels difficult.
The goal is to figure out why reading is difficult and teach in a way that gives their brain the instruction it needs.
Reference
D'Mello, A. M., & Gabrieli, J. D. E. (2018). Cognitive neuroscience of dyslexia. Language, Speech, and Hearing Services in Schools, 49, 798–809.