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Specific Learning Disabilities

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Evidence · 7 claims (3 for, 4 mixed) · 8 studies (5 associational, 1 quant-synthesis, 1 review, 1 qualitative), q2–q3 · 2 of 8 report an effect size · 6 claims rest on one study

Description

A learning disability (LD) is a specific impairment of academic learning that interferes significantly with one particular aspect of schoolwork — reading, writing, listening, speaking, or math — without necessarily affecting the others. By definition, an LD is diagnosed only after other explanations are ruled out: it is not an LD if the difficulty stems from a physical, sensory, or motor impairment, from a general intellectual impairment, or from the ordinary challenges of learning English as a second language. A genuine LD is also one that ordinary teaching effort hasn't resolved, though what counts as "ordinary effort" varies across teachers, schools, and students. LDs are by far the most common special-education category, accounting for roughly half of all students receiving special-education services and an estimated 5-20% of all students overall (U.S. Department of Education, 2005; Ysseldyke & Bielinski, 2002) — common enough that most teachers encounter at least one affected student every year regardless of grade level.

The three most commonly diagnosed specific learning disabilities are:

  • Dyslexia — difficulty in the area of reading, most often rooted in phonological processing difficulty (manipulating the sounds within words), along with rapid visual/verbal processing problems, letter reversal, difficulty reading left-to-right, and trouble associating letters with sounds. It appears to be rooted in neurological differences in the brain regions active in letter recognition, verbal response, and sound manipulation, and a number of genes have been linked to its development (National Institute of Neurological Disorders and Stroke, 2016). Treatment typically means adapting teaching methods to the student's specific problem area rather than a single universal remedy.
  • Dysgraphia — a writing disability often co-occurring with dyslexia (Carlson, 2013). It has distinct subtypes: phonological dysgraphia (inability to sound out words and write them phonetically) and orthographic dysgraphia (able to spell regularly-spelled words but not irregularly-spelled ones). Some students with dysgraphia additionally have motor-control difficulty that makes forming letters by hand hard, independent of the spelling-related subtypes.
  • Dyscalculia — difficulty specifically in mathematics, in students of otherwise average intelligence (terms in the literature include dyscalculia, mathematical learning disability, and mathematics disorder). Evaluating third-graders with dyscalculia, Cowan and Powell (2014) found difficulties concentrated in domain-general factors — working memory, reasoning, processing speed, and oral language — as well as in multi-digit skills specifically, including number-system knowledge.

Because a specific learning disability affects one narrow academic area rather than general capability, it is identified mainly during the school years, when a person's academic abilities are actively being tested and compared — once a person's job or daily life no longer requires that specific skill under testing conditions, the disability may become far less noticeable or relevant.

Design Implications

Context

Requirements

  • Ruling out physical, sensory, intellectual, or English-language-acquisition explanations before treating a persistent academic gap as a specific learning disability
  • Teaching methods tailored to the specific affected area (e.g., altered reading instruction for dyslexia) rather than a generic remediation approach

Constraints

  • Because LDs are narrowly scoped by definition, a student's strong performance in other academic areas doesn't rule out a genuine, significant disability in one specific one — the profile is uneven by definition, not a sign the diagnosis is wrong

Target Learners

  • Students showing a persistent, significant gap in one specific academic skill area despite otherwise-typical general ability and ordinary teaching support

Target Learning Goals

  • Functional reading, writing, or mathematics skill in the specific affected area, achieved through methods adapted to the disability's particular mechanism rather than generic extra practice alone

Affordances

Claims

Examples

A single struggling student can often be understood through more than one theoretical lens, each suggesting a different intervention. Consider a tenth-grader who adds two-digit numbers without carrying (42 + 59 = "911" rather than 101), correctly on some problems and not others: a Behaviorism lens suggests the incorrect strategy has simply been intermittently reinforced by occasional correct answers, so instructional credit should shift toward showing correct carrying work, not just the final answer; a Metacognition lens suggests the student is responding too impulsively and not reflectively enough (see Cognitive Styles), so having the student "think aloud" through each problem may help; and a Self-Regulated Learning/sociocultural lens suggests the student has learned the correct procedure but not consolidated it without support, calling for mentored practice within the student's zone of proximal development rather than more independent repetition.

Key Sources

  • National Institute of Neurological Disorders and Stroke. (2016). Dyslexia information page.
  • Carlson, N. R. (2013). Physiology of behavior (11th ed.). Pearson.
  • Cowan, R., & Powell, D. (2014). The contributions of domain-general and numerical factors to third-grade arithmetic skills and mathematical learning disability. Journal of Educational Psychology, 106(1), 214-229. doi:10.1037/a0034097
  • U.S. Department of Education. (2005). Twenty-fourth annual report to Congress on the implementation of the Individuals with Disabilities Education Act.
  • Ysseldyke, J., & Bielinski, J. (2002). Effect of different methods of reporting and reclassification on trends in test scores for students with disabilities. Exceptional Children, 68(2), 189-201.
  • Arduini-Van Hoose, N. (2020). Learning differences. In Educational psychology. Retrieved from https://edpsych.pressbooks.sunycreate.cloud. CC BY-NC-SA 4.0.
Page metadata
Field Value
type element
id specific-learning-disabilities
title Specific Learning Disabilities
description A learning disability is a significant, specific gap between a student's ability and one narrow area of academic achievement (reading, writing, or math) that persists despite ordinary teaching effort and isn't explained by broader intellectual, sensory, or language-acquisition factors — with dyslexia, dysgraphia, and dyscalculia as the three most commonly diagnosed forms.
status review
canonical True
generated by claude/unspecified on 2026-08-29
trust unverified — no one has confirmed this page's content

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