Dyslexia and ADHD Assessments: What’s the Difference and Why It Matters.

Dyslexia or ADHD? Understanding the Difference Between Assessments

Parents and adults often contact me because they are trying to make sense of a confusing picture. A child may be struggling to focus, finding reading and spelling difficult, becoming fatigued with schoolwork, or losing confidence in learning. It is very common to wonder whether these difficulties are linked to dyslexia, ADHD, or both.

One of the most frequent questions I am asked is whether ADHD can be assessed as part of a dyslexia assessment. This is an entirely understandable question, particularly as the two conditions can co-occur and share some overlapping features. However, they are different neurodevelopmental conditions, and understanding how they are assessed — and why — is important in choosing the right next step.

What does

a dyslexia assessment involve?

A dyslexia assessment is an educational assessment carried out by a suitably qualified specialist assessor, in line with the SpLD Assessment Standards Committee (SASC) guidelines.

The purpose of a dyslexia assessment is to build a clear picture of how an individual learns. This includes exploring:

• Gathering the full history of development against expected milestones and observations from the home and school setting of the current earning situation

• Reading accuracy and fluency

• Spelling and writing skills

• Underlying cognitive processes linked to literacy, such as phonological processing, working memory and processing speed

• Strengths as well as areas of difficulty

• The impact of these differences on learning and day-to-day functioning

• The resulting report provides recommendations for both teaching professionals and families to support continued progress.

My assessments are completed face-to-face and are supported by a consultation call beforehand, a short introductory video meeting with your child, and a follow-up discussion once the report has been shared. This ensures families feel informed, reassured and clear about the outcomes and recommendations.

What does an ADHD assessment involve?

ADHD is a medical diagnosis. It cannot be diagnosed through educational testing alone and must be assessed by an appropriately qualified clinician, such as a paediatrician, psychiatrist or clinical psychologist.

An ADHD assessment typically involves:

• A detailed developmental and medical history

• Evidence that difficulties have been present since early childhood

• Behavioural rating scales completed by parents, teachers or adults themselves

• Evidence that difficulties occur across more than one setting (for example, home and school)

• Consideration of other factors that could explain the difficulties

This type of assessment looks at behaviour, attention and executive functioning over time, rather than performance on structured learning tasks.

Why are dyslexia and ADHD assessed separately?

Although dyslexia and ADHD can co-occur, they require different types of evidence and different professional expertise.

A dyslexia assessment focuses on how an individual processes language and literacy, using standardised educational tests. An ADHD assessment focuses on behavioural regulation, attention and impulse control within a medical and developmental framework.

From an ethical and professional perspective, it is essential that assessors work within their scope of practice. This protects families by ensuring conclusions are robust, evidence-based and defensible.

It is also important to recognise that:

• Literacy difficulties can sometimes look like inattention

• High cognitive effort can lead to fatigue and reduced concentration

• Anxiety or low confidence can affect focus and engagement

Without careful analysis, there is a risk of misattributing difficulties, which can delay appropriate support.

What happens if ADHD is suspected during a dyslexia assessment?

If, during a dyslexia assessment, I observe patterns of attention, concentration or executive functioning difficulties that go beyond what would typically be expected for dyslexia alone, this will be clearly documented in the report.

Where appropriate, I can:

• Explain how these observations may be affecting learning

• Distinguish between literacy-related and attentional factors

• Provide a referral letter for your GP to support further medical investigation

This ensures concerns are taken seriously, while avoiding conclusions that fall outside my professional remit.

Can dyslexia and ADHD ever be assessed together?

In some cases, multidisciplinary NHS or private neurodevelopmental services assess multiple neurodevelopmental conditions as part of a broader investigation. In these settings, ADHD is diagnosed medically, and learning difficulties may be identified alongside this.

However, these assessments often do not replace a detailed specialist dyslexia assessment. They may not include in-depth analysis of literacy skills or provide specific recommendations to support learning in school or at home. As a result, many individuals still go on to seek a specialist dyslexia assessment to fully understand their learning profile.

Why a dyslexia assessment is often a helpful first step

A specialist dyslexia assessment provides clarity. It helps families understand how a child learns, what is contributing to their difficulties, and what support will be most effective.

It can also:

• Provide evidence to support future referrals

• Help professionals distinguish between literacy-based and attention-based difficulties

• Reduce confusion and unnecessary labelling

There is no single “right” pathway for every child. What matters most is that assessments are thorough, ethical and carried out by appropriately qualified professionals.

If you are unsure which assessment is right for your child, I am always happy to talk this through before any assessment is booked.