What is Dyslexia?

There are many definitions of dyslexia. A very simple one would be that dyslexia is a specific learning difficulty, which makes it hard for some people to learn to read, write and spell correctly. The recent Report of the Task Force on Dyslexia (2001) suggests the following more scientific definition:

Dyslexia is manifested in a continuum of specific learning difficulties related to the acquisition of basic skills in reading, spelling and/or writing, such difficulties being unexplained in relation to an individual's other abilities and educational experiences. Dyslexia can be described at the neurological, cognitive and behavioural levels. It is typically characterised by inefficient information processing, including difficulties in phonological processing, working memory, rapid naming and automaticity of basic skills. Difficulties in organisation, sequencing and motor skills may also be present. (P.31)

The report goes on to say that the learning difficulties arising from dyslexia:


 

 

Causes

A great deal of research has been done in recent years on the cause of dyslexia and it may be that a great deal more needs to be done before we have a definitive answer. We do know that developmental dyslexia is an inherited, more common in male than females and that one is born with it. While no conclusive research has been carried out in Ireland to determine how prevalent it is, studies in other countries would suggest that 6% to 8% of the population are likely to be affected. It would seem that people with dyslexia share a cluster of genes, which may, it is believed, account for the variations in the nature and extent of specific learning difficulties.

 

Experts are not agreed, however, on the underlying causes of dyslexia. Professor John Stein, Oxford, believes that auditory and visual difficulties are caused by abnormal magnocellular development. Malfunction in the development of sensory nerves happens at the foetal stage and is said to cause eye convergence difficulties and inhibit steady eye fixation. Other theorists consider that a phonological deficit is the root cause of dyslexia. Evidence from brain imaging suggests that people with dyslexia do not activate the left hemisphere (the language side) in the brain as much when reading as non-dyslexic readers, and that there is less engagement of the areas of the brain, which match letters with sounds. Yet another view is that the role of the part of the brain that controls balance (the cerebellum) is crucial and that differences in this area make it difficult for children with dyslexia to acquire automaticity in tasks and may further inhibit the development of language dexterity and motor skills.

 

Experts do agree that dyslexia describes differences in the way in which the brain processes information, and while there may be differences in the way in which the brain works, this does not imply any abnormality, disease or defect.


All Children Learn Differently

Whatever the origins of the difficulty, the truth is that children and adults with dyslexia learn differently. If this difference is not accommodated within the school system, the child may have difficulty in learning to read, write, spell and handle numbers. Some difficulties will be mild and a child may cope without extra support. Others are severe and the child will require specific help and tuition.


Indicators of Dyslexia

A problem learning to read and/or spell should alert parents and teachers that a Specific Learning Disability may be present. This applies particularly when a child's progress seems at odds with his or her general level of ability.

A child with dyslexia may:


 

 

Telling Your Child About Dyslexia

There is an old saying - "It's no disgrace to be poor, but it's mighty inconvenient."
The same could be said of dyslexia. It is nothing to be ashamed of, but it does complicate life. While there is no doubt that many people with dyslexia have special gifts, and some of the common traits of dyslexia can be very useful, nevertheless in a world where literacy is important, dyslexia air a definite inconvenience. There is no denying that - but it is not the end of the world either. It is very important for your child that you find a balance when dealing with the subject.

 

If a diagnosis of dyslexia has been made and your child needs to have extra tuition, within or outside of school, this will need to be explained to the child very carefully. Again, the more information you have the easier this will be. When explaining in dyslexia to your child, you have to translate the results of the assessment into plain language. You also want the child to know that dyslexia is nothing to be ashamed of, that help is available, and that there is no reason why the child should not achieve to his or her potential.