BrainLab Psychology Group

Clinical referral decision guide · 2026

ADHD, learning disorder, or both?

Attention and academic difficulties can produce the same visible outcome for different reasons. A useful referral describes the pattern, development, instruction and functional impact—not an assumed label.

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Clinical referral framework

Start with the pattern that needs explanation

This framework organizes referral questions. It does not diagnose ADHD or a specific learning disorder.

  1. Broad attention or executive difficulty

    Is it evident across relevant settings and development, or mostly during demanding academic tasks?

  2. Persistent reading difficulty

    Examine word reading, decoding, fluency, comprehension, instruction, language, and response to intervention.

  3. Written-expression difficulty

    Separate idea generation, language, spelling, transcription, organization, motor demands, and sustained attention.

  4. Mathematics difficulty

    Examine number concepts, facts, calculation, reasoning, instruction, anxiety, and executive functioning.

  5. Ability–achievement difference

    Do not use a discrepancy alone as a diagnosis; interpret the full pattern, history, instruction, and functional impact.

  6. School-only impairment

    Consider task demands, instruction, specific academic skills, anxiety, environment, and whether cross-setting evidence is absent.

  7. ADHD and SLD both plausible

    Use an integrated assessment question so comorbidity and interaction are evaluated rather than forced into either/or.

What the distinction does—and does not—mean

ADHD involves a developmental pattern of attention regulation and/or hyperactivity-impulsivity with impairment. Specific learning disorder involves persistent difficulty learning and using academic skills despite targeted help, interpreted in context. They can co-occur. Neither inconsistent work nor a single low score answers the question.

Evidence that improves the referral

ADHD and learning-disorder referral evidence
DomainUseful evidenceCommon overreach to avoid
Across settingsHome, school, work and daily-life examples; demands and supportsAssuming school-only inattention establishes ADHD
DevelopmentOnset, course, early records and informants where availableTreating recent difficulty as proof of a developmental disorder
InstructionAttendance, language, teaching, intervention and responseInterpreting underachievement without opportunity to learn
Academic skillsReading, writing and mathematics pattern over timeUsing an ability–achievement discrepancy alone
FunctionAccuracy, fluency, effort, independence, deadlines and participationEquating a diagnosis with a predetermined accommodation
DifferentialAnxiety, mood, sleep, health, language, sensory and contextual factorsForcing an either/or answer when both or neither may apply

When broader assessment is useful

A broader psychoeducational or neurodevelopmental question may be appropriate when difficulties span several academic areas, attention and learning interact, records conflict, or an external decision requires a current integrated account of functioning.

The referral should identify what needs explanation and consider language and culture, sensory access, educational opportunity and quality of instruction, psychiatric or emotional factors, sleep and health, and intervention history. Cognitive testing is useful when the cognitive profile matters to that question, not as an automatic requirement or a diagnosis by itself.

Assessment for learning disability or dyslexiaPsychoeducational assessmentADHD assessment

Source record

Clinical sources and review

Published and reviewed by BrainLab Psychology Group, September 1, 2026. This framework is educational and does not establish a diagnosis.

CADDRA guideline overview (opens in a new tab)Ontario Psychological Association learning-disability guidelines (opens in a new tab)

Next step

Start with the pattern that needs explaining.

Use a focused or integrated referral question without deciding the diagnosis in advance.

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