(For the full focus group study, go to My Mathematical Brain)
Negative attitudes for sure, but that’s because every day these learners are unable to understand what almost all of their classmates are able to understand, and they know it, their teachers know it, their parents know it and their classmates know it.
Seeing the world in numbers
So why do these learners have so much difficulty learning arithmetic? We now have a very good idea of the answer. Humans, including human infants, and many other species, see the world in terms of numbers, just like they see the world in colour. They see the number of people in a room, the number of fruits on a tree, the number of predators after them. They may not be conscious of the number, they may not remember the number, but their actions are affected by the number. This is an inherited capacity, like seeing the world in colour: there are specialized neural circuits for doing it. In colour vision, this inheritance can sometimes go wrong, and the individual is colour blind; in dyscalculia, the learner is number blind, to put it crudely.
However, we now know that not all dyscalculics have inherited the condition. Anything that affects the specialized number circuit in the brain, including prematurity, foetal alcohol syndrome, perinatal trauma, or just genetic bad luck, can make learning about numbers and arithmetic very difficult, though not necessarily other branches of mathematics, such as geometry.
Screening for dyscalculia
It is also very easy to test for whether an individual has this problem: how efficiently can they say how many objects are in a display. This is the basis of my Dyscalculia Screener, a product that has been available from GL-Assessment since 2003. So it is possible to reliably distinguish dyscalculic learners from those who are bad at maths for other reasons.
One thing Teresa Iuculano and I found in a study of 5 year old learners who were at the bottom of their numeracy classes was that the non-dyscalculics responded much better to intervention than the dyscalculics. Admittedly, the intervention was designed for all kids with low numeracy and not specifically for dyscalculics.
This brings me on to a really important issue: intervention. Just as dyslexics need specialized help to learn to read (the usual literacy classes don’t work), so dyscalculics need specialized help. Unfortunately, there is little help available. This is because dyscalculia is not widely recognized. There is nothing about it on the Department for Education website; there is almost nothing about it on the National Numeracy website; and there is no British Dyscalculia Association to lobby for recognition. On the plus side, the British Dyslexia Association is now in the process of taking dyscalculia seriously. However, teachers are not taught about it; it’s very rarely in courses for educational or clinical psychologists; and very few parents and even fewer sufferers have ever heard about it.
It affects about 5% of the population, just like dyslexia. And it has an even bigger effect on life chances. A major UK government report in 2008 (Mental Capital and Wellbeing) put it like this “Developmental dyscalculia is currently the poor relation of dyslexia, with a much lower public profile. But the consequences of dyscalculia are at least as severe as those for dyslexia.” It found that “Dyslexia can reduce lifetime earnings by £81,000, and reduce the probability of achieving five or more GCSEs (A*-C) by 3-12 percentage points.” But “Dyscalculia can reduce lifetime earnings by £114,000 and reduce the probability of achieving five or more GCSEs (A*-C) by 7–20 percentage points.”
Brian Butterworth is Emeritus Professor of Cognitive Neuropsychology at University College London, and author of several books including Dyscalculia, from Science to Education published December 2018.
Read more about Brian's studies
Photo credit: UCL