DOI: https://doi.org/10.58248/RR93  

Executive summary 

Dyscalculia is a learning disability where people have persistent and severe difficulty with mathematics. It affects around 6% of the population. Dyscalculia has lifelong consequences for education (PDF), employment, wellbeing and economic participation 

Evidence shows that early identification, mathematics-specific interventions, and improved teacher training can help people with dyscalculia. 

However, researchers have highlighted that dyscalculia remains underdiagnosed and under-recognised in the UK, with limited training available for teachers and low research funding compared with other conditions like dyslexia. Strengthening early identification and improving professional training could improve life outcomes for people with dyscalculia (PDF) and contribute to national economic productivity. 

Definition, prevalence and diagnosis 

What is dyscalculia? 

Dyscalculia is a learning disability characterised by persistent and severe difficulties in learning and understanding mathematics. It occurs despite: 

  • Intellectual ability within the typical range 
  • Adequate and age-appropriate educational opportunities 
  • No alternative explanation (such as sensory impairment or lack of schooling) 

It is distinct from general low attainment in mathematics, temporary learning delays and maths anxiety or low confidence. 

Dyscalculia is a lifelong learning disability. While people can improve their skills with support, difficulties typically persist into adulthood and affect everyday activities, including financial decision-making and workplace tasks. 

How many people have dyscalculia? 

Research estimates that dyscalculia affects approximately 6% of the population, equivalent to at least one child in every classroom of 30. However, the diagnosis rate is much lower. There are no official statistics for dyscalculia diagnosis rates, as the Department of Education only collects data relating to “Specific Learning Difficulty”, which combines dyslexia and dyscalculia. 

Dyscalculia is equally prevalent in boys and girls and occurs across socio-economic and cultural groups. 

How is dyscalculia diagnosed? 

Dyscalculia is diagnosed based on patterns of behaviour. Key indicators include: 

  • Mathematics performance significantly below age expectations on multiple standardised tests 
  • Persistent underachievement in mathematics over time 
  • Lack of substantial improvement following targeted interventions 
  • No better alternative explanation for the difficulties 

Because diagnosis is based on difficulties persisting over time despite evidence-based support, dyscalculia cannot be diagnosed based on a single test at a single point in time. 

Access to assessment for dyscalculia remains limited in the UK. Despite similar prevalence to dyslexia, dyscalculia is diagnosed far less frequently in the UK (and in many other countries). A child with dyslexia is significantly more likely to receive diagnosis and specialist support than a child with dyscalculia. 

This underdiagnosis (as well as under-recognition in society) has long-term and wide-ranging implications, not just for the person’s educational and career prospects, and earning potential, but also for their general health and wellbeing. Dyscalculia has been found to increase the risk of low self-esteem, anxiety, depression, and behaviour problems 

Guidance on diagnosis can be found in international diagnostic manuals (DSM-5-TR and ICD-11), and UK-specific guidance is provided by the SpLD Assessment Standards Committee. 

What causes dyscalculia? 

Dyscalculia is a neurodevelopmental condition, meaning it is present from a very young age, and affects how the brain develops. Although the causes are not fully understood, research indicates that dyscalculia has a biological basis involving atypical brain development. 

People with dyscalculia have differences in how their brains process numerical and magnitude information (for example, when estimating quantities, ordering numbers, or linking number symbols to the amounts that they represent). They also have differences in broader cognitive processes, such as memory, attention and language. 

Typical brain-activation patterns vary across people with dyscalculia and also change with development and in response to interventions. There are currently no reliable biological or brain-based markers for diagnosis. 

Dyscalculia does not reflect low intelligence or poor overall academic ability. Many people with dyscalculia have strengths in other domains. 

Lifestyle factors do not cause dyscalculia on their own, but they can influence how it develops. For example, research shows that people from lower socio-economic backgrounds are more likely to develop mathematics learning difficulties. However, access to early intervention can lead to better mathematics performance. 

If someone is already at risk of having a neurodevelopmental disability such as dyscalculia, environmental disadvantage (such as lower access to parental and educational support, and other resources) may exacerbate it. 

What interventions can help people with dyscalculia? 

Early identification 

Early identification and intervention are crucial for people with dyscalculia. This is because maths skills build over time, and people need to learn foundational skills before moving to harder topics. Without early support: 

Researchers highlight that identification should be available for all ages, due to the underdiagnosis of dyscalculia, and because some learners may be able to mask their difficulties in the first school years. 

Effective interventions 

Evidence shows that: 

General brain‑training exercises (such as working‑memory training) do not improve mathematics skills. 

Given the variability of dyscalculia, support should be tailored to individuals, be regularly reassessed and address both mathematical and relevant non-mathematical needs (such as issues with time management and using money). 

Reasonable adjustments to support people with dyscalculia may include making assessment conditions less cognitively demanding and adapting how teaching or task instructions are delivered. 

Lifelong support 

Support may be needed beyond school, including: 

Policy considerations 

Underdiagnosis and limited awareness 

Despite similar prevalence to dyslexia, dyscalculia is rarely diagnosed in the UK. One study estimated that a child with dyslexia was 100 times more likely to be diagnosed than a child with dyscalculia.  

There is currently limited explicit recognition or dedicated guidance within national education frameworks. Official statistics on Special Educational Needs in England only use the umbrella category of Specific Learning Difficulty, not discriminating between dyslexia and dyscalculia, despite distinct developmental origins and support needs. 

Teacher training 

Research suggests that around 76% of educators in the UK receive no training in dyscalculia at all. 

Pre-service training in dyscalculia is almost non-existent (only around 3% of UK educators have access to dyscalculia training in teacher training courses). Years of teaching experience is unrelated to knowledge of dyscalculia. 

Experience of working with pupils with mathematics learning difficulties does not lead to better knowledge and awareness of dyscalculia. Without teacher training, early signs and intervention opportunities may be missed. 

Research funding 

Dyscalculia research receives substantially less funding compared with other developmental conditions that are just as widespread. 

Between 2010 and 2020, Wellcome funded dyslexia by £3 million and dyscalculia by £1 million. Between 2005-2019, UKRI funded dyslexia with £107 million and dyscalculia £23 million. 

Researchers have advocated for more funding to better understand developmental pathways, and to develop screening tools and interventions. 

Mathematics assessment and qualifications 

A significant proportion of pupils (around 40%) do not achieve a pass in GCSE mathematics, and resit success rates are low (around 25%). This can limit access to further study and employment. 

Researchers have questioned whether alternative, role-specific numeracy pathways into higher education could better support individuals with specific learning difficulties without compromising essential skill requirements. 

Suggestions from researchers

Based on current evidence, researchers have suggested that the following could improve outcomes: 

  1. Improve recognition and guidance
    Develop clear, accessible guidance on dyscalculia within national education frameworks.  
  2. Improve data collection related to prevalence, needs and support
    Instead of using the “Specific Learning Difficulty” category, collect official data separately for dyscalculia and dyslexia. 
  3. Strengthen teacher training
    Integrate dyscalculia into pre-service and in-service teacher education. 
  4. Promote early identification
    Encourage use of reliable dyscalculia screening tools and structured early intervention pathways for mathematics. 
  5. Ensure access to assessment across the lifespan
    Provide equitable access to diagnostic assessment for children and adults. 
  6. Increase research investment
    Support research funding proportionate to prevalence and societal impact. 
  7. Review assessment and qualification structures
    Consider whether current high-stakes mathematics requirements appropriately balance rigour and accessibility. 

Acknowledgements 

Dr Kinga Morsanyi is a Reader in Mathematical Cognition at Loughborough University. She is Associate Editor or Editorial Board Member of several leading academic journals, and Member of the UK Young Academy and the Young Academy of Europe. She is Advisory Board Member for the Dyscalculia Network, and Working Group Lead for the Specific Learning Difficulties Network. The author gratefully acknowledges the support of Loughborough University’s Policy Unit in preparing this briefing, and supporting her wider policy engagement on dyscalculia. The writing of this briefing was partially supported by the ESRC (ES/W002914/1).  

Questions about this briefing should be referred to Clare Lally ([email protected]), who acted as parliamentary lead for this work.