Specific Learning Disorder (SLD) – DSM-5 Explained

 

What Is DSM-5?

The Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition is used by professionals to:

• Diagnose mental health and developmental conditions
• Provide clear criteria for assessment
• Ensure consistency across services

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What Is Specific Learning Disorder (SLD)?

In the DSM-5, learning disabilities are called:

👉 Specific Learning Disorder

It is classified as a:

• Neurodevelopmental disorder
• A condition that affects how the brain develops and processes information

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Definition of SLD

Specific Learning Disorder means:

• A person has persistent difficulties in:
  • Reading
  • Writing
  • Mathematics

👉 These difficulties:

• Continue over time
• Occur despite:
  • Normal intelligence
  • Appropriate teaching and support

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Important Change in DSM-5

Single Diagnosis Approach

Before DSM-5 (in DSM-IV), there were separate diagnoses:

• Reading Disorder
• Mathematics Disorder
• Disorder of Written Expression

👉 DSM-5 changed this by:

• Combining them into one diagnosis: SLD
• Adding “specifiers” to describe the exact difficulty

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Core Diagnostic Criteria

To be diagnosed with SLD, a person must meet the following:

1. Persistent Difficulties

• Problems must last for at least 6 months
• Even after targeted support or intervention

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2. Academic Skills Below Expected Level

• Skills are significantly below what is expected for age

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3. Early Onset

• Difficulties usually begin in:
  • Early school years

👉 However:

• They may become more noticeable as school demands increase

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4. Not Better Explained by Other Causes

• Not due to:
  • Intellectual disability
  • Lack of education
  • Sensory issues (e.g. vision or hearing problems)

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Severity Levels in SLD

DSM-5 identifies three levels:

Mild

• Difficulties in one or two areas
• Person can cope with:
  • Support
  • Accommodations

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Moderate

• More noticeable difficulties
• Requires:
  • Regular support
  • Specialized teaching

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Severe

• Significant difficulties across multiple areas
• Requires:
  • Intensive
  • Individualised support

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SLD Specifiers (Types of Difficulties)

Although it is one diagnosis, DSM-5 uses specifiers to describe the area affected:

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1. With Impairment in Reading

(often called Dyslexia)

Includes difficulties with:

• Word reading accuracy
• Reading speed (fluency)
• Reading comprehension

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2. With Impairment in Written Expression

Includes difficulties with:

• Spelling
• Grammar and punctuation
• Organising written work

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3. With Impairment in Mathematics

(often called Dyscalculia)

Includes difficulties with:

• Number sense
• Calculations
• Mathematical reasoning

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Key Change: No IQ Discrepancy Requirement

In the past:

• Diagnosis required a gap between:
  • IQ (intelligence)
  • Academic performance

👉 DSM-5 removed this rule.

Now:

• Focus is on actual learning difficulties, not IQ comparisons

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How SLD Is Diagnosed

Diagnosis involves:

• Standardised academic testing
• Clinical assessment
• Developmental history
• Input from:
  • Teachers
  • Parents
  • Professionals

👉 It is a comprehensive assessment, not just one test.

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Comorbidity (Co-Occurring Conditions)

SLD often occurs alongside other conditions, such as:

• Attention Deficit Hyperactivity Disorder
• Anxiety disorder
• Behavioural difficulties

👉 These conditions can:

• Increase challenges
• Affect learning and wellbeing

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Important Distinction

Specific Learning Disorder is:

• Not an intellectual disability
• People usually have:
  • Average or above-average intelligence

👉 The difficulty is in processing information, not ability.

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Key Message

The DSM-5 approach shows that:

• Learning disabilities are complex and individual
• They should be understood as:
  • Brain-based differences
• Support should be:
  • Personalised
  • Ongoing

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Simple Summary (Easy Read Style)

• DSM-5 calls learning disabilities Specific Learning Disorder (SLD)
• It is a brain-based condition
• It affects:
  • Reading
  • Writing
  • Maths
• It must:
  • Last at least 6 months
  • Be below expected level
• There are different severity levels
• It can happen alongside:
  • ADHD
  • Anxiety
• It is not linked to low intelligence

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Powerful Insight for Your Book

👉 “DSM-5 moved away from labels and towards understanding the full picture of how a person learns.”