Learning Disabilities: Neuropsychological Profiles and Interventions

Specific Learning Disability (SLD) - Overview

A Specific Learning Disability is a neurological disorder that affects the brain's ability to receive, process, store, and respond to information. It is NOT related to intelligence - students with SLD often have average or above-average IQ.

DSM-5 Diagnostic Criteria

1. Difficulties in at least one academic area for 6+ months despite targeted intervention
2. Skills substantially below age expectations
3. Begins during school-age years
4. Not better explained by intellectual disability, sensory issues, or environmental factors

Dyslexia (Reading Disability)

Neurological Basis

• Differences in left hemisphere language areas (temporal-parietal and occipital-temporal regions)
• Reduced activation in the "visual word form area"
• Often shows stronger right-hemisphere processing

Cognitive Profile

Weaknesses: - Phonological processing (manipulating sounds) - Rapid automatized naming (RAN) - Working memory for verbal information - Processing speed for symbol-based tasks

Often Preserved/Strengths: - Verbal reasoning and comprehension (when read aloud) - Visual-spatial reasoning - Big-picture thinking - Creative problem-solving

Assessment Indicators

• Phonological Awareness subtests significantly below average
• RAN (Rapid Automatized Naming) deficits
• Word reading accuracy and fluency below expected
• Often large gap between listening comprehension and reading comprehension

Evidence-Based Interventions

1. Structured Literacy / Orton-Gillingham Approach
2. Explicit, systematic phonics instruction
3. Multisensory techniques (see it, say it, hear it, write it)

4. Cumulative and sequential skill building

5. Phonological Awareness Training

6. Sound blending and segmenting exercises
7. Rhyming and alliteration activities

8. Phoneme manipulation tasks

9. Fluency Building

10. Repeated reading of controlled texts
11. Paired reading with fluent reader

12. Timed reading with progress monitoring

13. Accommodations

14. Text-to-speech technology
15. Audiobooks and read-alongs
16. Extended time for reading tasks
17. Reduced reading load where possible
18. Dyslexia-friendly fonts (OpenDyslexic, Lexie Readable)

Dyscalculia (Mathematics Disability)

Neurological Basis

• Differences in intraparietal sulcus (number sense region)
• May involve parietal lobe processing differences
• Can affect number representation, magnitude comparison, arithmetic fact retrieval

Cognitive Profile

Weaknesses: - Number sense (subitizing, magnitude comparison) - Arithmetic fact retrieval - Mathematical reasoning - Visual-spatial processing for math - Working memory for multi-step procedures

Often Preserved/Strengths: - Verbal abilities - Reading skills - Conceptual understanding when using manipulatives

Assessment Indicators

• Math calculation and reasoning significantly below expected
• Difficulty with basic number facts despite practice
• Poor number sense (estimating, comparing quantities)
• Struggles with math procedures and sequences

Evidence-Based Interventions

1. Concrete-Representational-Abstract (CRA) Approach
2. Start with physical manipulatives
3. Move to pictorial representations

4. Finally introduce abstract symbols

5. Explicit Strategy Instruction

6. Teach specific problem-solving strategies
7. Use think-alouds to model thinking

8. Provide worked examples

9. Number Sense Building

10. Subitizing practice
11. Number line activities
12. Estimation games

13. Real-world quantity experiences

14. Accommodations

15. Calculator for complex computation (when testing concepts)
16. Formula sheets and reference cards
17. Graph paper for alignment
18. Extended time
19. Reduced problem sets

Dysgraphia (Writing Disability)

Neurological Basis

• May involve motor cortex, premotor areas, or visual-motor integration regions
• Can be related to fine motor control or language formulation

Types

1. Motor Dysgraphia - Fine motor difficulties affecting handwriting
2. Spatial Dysgraphia - Visual-spatial difficulties affecting letter/word spacing
3. Linguistic Dysgraphia - Language processing difficulties affecting written expression

Cognitive Profile

Weaknesses: - Fine motor control and coordination - Visual-motor integration - Written language organization - Spelling - Processing speed for writing tasks

Often Preserved/Strengths: - Oral expression - Reading ability (often) - Conceptual understanding

Evidence-Based Interventions

1. Handwriting Instruction
2. Explicit letter formation instruction
3. Multisensory practice (sand trays, finger writing)

4. Self-verbalization of letter strokes

5. Keyboarding Skills

6. Teach touch-typing early
7. Allow typing as alternative to handwriting

8. Speech-to-text technology

9. Written Expression Support

10. Graphic organizers for planning
11. Sentence frames and starters
12. Dictation tools
13. Separate grades for content vs. mechanics

ADHD (Attention-Deficit/Hyperactivity Disorder)

Neurological Basis

• Differences in prefrontal cortex development and function
• Dopamine and norepinephrine neurotransmitter differences
• Executive function network differences

Presentations

1. Predominantly Inattentive - Difficulty sustaining attention, easily distracted, forgetful
2. Predominantly Hyperactive-Impulsive - Fidgety, difficulty staying seated, interrupts
3. Combined - Both inattentive and hyperactive-impulsive symptoms

Cognitive Profile

Executive Function Weaknesses: - Sustained attention - Working memory - Inhibition/impulse control - Task initiation - Organization and planning - Time management - Emotional regulation

Often Preserved/Strengths: - Intelligence (full range) - Creativity - High energy and enthusiasm - Ability to hyperfocus on interesting tasks - Quick thinking

Evidence-Based Interventions

1. Environmental Modifications
2. Preferential seating (near teacher, away from distractions)
3. Reduced visual clutter
4. Quiet work space options

5. Frequent movement breaks

6. Instructional Strategies

7. Chunk tasks into smaller pieces
8. Provide clear, brief instructions
9. Use visual schedules and checklists
10. Immediate and frequent feedback

11. Incorporate movement and hands-on learning

12. Executive Function Coaching

13. Teach organization systems explicitly
14. Use timers and visual time tools
15. Practice planning and prioritizing

16. Self-monitoring strategies

17. Behavioral Supports

18. Token economy/reward systems
19. Behavior contracts
20. Regular check-ins
21. Home-school communication

Autism Spectrum Disorder (ASD) - Educational Implications

Neurological Basis

• Differences in social brain networks
• Sensory processing differences
• Often enhanced pattern recognition and detail focus

Cognitive Profile (Varies Widely)

Common Challenges: - Social communication and interaction - Flexible thinking - Sensory regulation - Executive function (especially flexibility) - Understanding figurative language and inference

Common Strengths: - Visual processing and memory - Attention to detail - Pattern recognition - Deep knowledge in interest areas - Rule-following and consistency

Evidence-Based Interventions

1. Visual Supports
2. Visual schedules and routines
3. Visual instructions and task analyses
4. Social stories

5. First-Then boards

6. Explicit Social Instruction

7. Social skills groups
8. Video modeling
9. Role-playing

10. Comic strip conversations

11. Sensory Accommodations

12. Sensory breaks
13. Noise-reducing headphones
14. Fidget tools
15. Flexible seating options

16. Dim lighting options

17. Academic Modifications

18. Predictable routines and advance notice of changes
19. Clear, literal instructions
20. Incorporate special interests into learning
21. Extended time for transitions

Intellectual Disability (ID)

Definition

Significant limitations in both intellectual functioning (IQ below 70-75) AND adaptive behavior (conceptual, social, practical skills) with onset during developmental period.

Severity Levels

• Mild (IQ 50-70): Can learn academic skills up to ~6th grade level
• Moderate (IQ 35-50): Can learn functional academics and daily living skills
• Severe (IQ 20-35): Can learn basic self-care and simple communication
• Profound (IQ below 20): Requires extensive support in all areas

Educational Approach

1. Functional Curriculum Focus
2. Life skills and daily living
3. Vocational skills
4. Community participation

5. Self-advocacy

6. Instructional Strategies

7. Task analysis (break into small steps)
8. Repeated practice and overlearning
9. Concrete, hands-on instruction
10. Immediate and consistent feedback

11. Generalization training across settings

12. Modifications

13. Simplified language
14. Reduced content complexity
15. Alternative assessments
16. Modified grading
17. Picture-based supports

Processing Speed Deficits

Impact on Learning

• Slower completion of all academic tasks
• May not finish tests in allotted time
• Note-taking is difficult
• Appears to have attention problems (but may be processing)
• Fatigue from mental effort

Interventions

1. Extended Time (essential accommodation)
2. Reduced Workload (fewer problems, same concepts)
3. Pre-printed notes (to reduce writing demands)
4. Chunked instruction (allow processing time)
5. Priority seating (less visual distraction)

Working Memory Deficits

Impact on Learning

• Loses track of multi-step directions
• Difficulty with mental math
• Forgets what was just read
• Struggles to organize thoughts for writing
• Loses place in tasks

Interventions

1. Reduce memory load
2. Write directions down
3. Provide step-by-step checklists

4. Allow reference sheets

5. Strengthen encoding

6. Multisensory instruction
7. Repetition and review

8. Chunking information

9. External supports

10. Graphic organizers
11. Note-taking templates
12. Visual reminders