Specific Learning Disorders - Dyslexia, Dysgraphia & Dyscalculia
Specific Learning Disorders (SLD) are neurodevelopmental conditions that affect how the brain processes academic information. They make it significantly harder for an individual to learn and apply foundational skills in reading, writing or mathematics, despite having typical intelligence, adequate instruction and normal vision and hearing.
Learning disorders are not related to intelligence, effort or motivation. Instead, they reflect underlying differences in how the brain receives, stores and processes specific types of information. The three primary types of Specific Learning Disorders are Dyslexia (reading), Dysgraphia (written expression) and Dyscalculia (mathematics).
1. Dyslexia (Specific Learning Disorder with Impairment in Reading)
Dyslexia affects the way the brain decodes language. It primarily impacts word recognition, spelling and reading fluency.
Core Characteristics:
Phonological Processing: Difficulties connecting speech sounds to letters or letter patterns (phonics).
Reading Accuracy and Speed: Reading words accurately can require intense effort, leading to slow or effortful reading.
Spelling Challenges: Frequent difficulties spelling common words or applying predictable spelling rules.
Comprehension Impact: Because so much cognitive energy is spent sounding out individual words, understanding the overall meaning of a text can become challenging.Common Misconception: Dyslexia is not a problem with visual perception or seeing letters backward; it is fundamentally a language-processing difference in the brain.
2. Dysgraphia (Specific Learning Disorder with Impairment in Written Expression)
Dysgraphia affects the complex set of motor and cognitive skills required for writing. It can involve difficulties with fine motor co-ordination, spatial awareness on paper and the process of converting thoughts into written text.
Core Characteristics:
Handwriting Mechanics: Unclear or inconsistent handwriting (mixing print and cursive, uneven letter sizes or irregular spacing between words).
Physical Discomfort: Writing by hand often requires extreme effort or physical tension, leading to hand fatigue or cramping.
Spelling and Grammar: Inconsistent spelling, missing words or punctuation in written sentences and difficulties using correct grammar on paper.
Expressive Writing Gap: A marked difference between spoken and written ability - individuals often express complex ideas verbally with ease but struggle to articulate those same ideas in writing.
3. Dyscalculia (Specific Learning Disorder with Impairment in Mathematics)
Dyscalculia affects a person’s ability to understand, learn and perform mathematical concepts and calculations.
Core Characteristics:
Number Sense Deficits: Difficulties understanding quantity, numerical relationships or basic concepts like "greater than" and "less than."
Fact Retrieval and Calculation: Struggling to memorise basic math facts (like multiplication tables) or calculate basic mental math.
Symbol Processing: Trouble connecting numerical symbols (e.g. 7) to their spoken words ("seven") or physical quantities.
Practical Math in Daily Life: Challenges with reading clocks, counting change, estimating distances, reading maps or managing time effectively.
Key Considerations Across All Specific Learning Disorders
Co-Occurrence: It is common for learning disorders to overlap. An individual may experience Dyslexia and Dysgraphia or have an SLD alongside ADHD.
Lifelong Profile: Learning disorders are permanent neurobiological differences but their impact can be managed effectively with proper accommodations and tailored instruction.
Preserved Intelligence and Strengths: Individuals with SLDs frequently demonstrate strong reasoning, problem-solving, abstract thinking and creative strengths in non-impacted areas.