What Causes Increases In Dyslexia?
It is ironic that as the educational standards, instruction methods, and measurements of learning are developing at a rapid rate the incidence of dyslexia among children is growing right along with it. Child psychologist have begun reporting more and more cases of dyslexia, and even cases that are identified at younger ages, as young as 3-5 years old.
The standard theory of the evolution of dyslexia doesn’t seem to apply to this trend. The hypothesis states that the learning disability is created when instruction and learning is introduced later in the neurodevelopment stages of children. Those who developed this hypothesis determined that late introduction to educational stimulation caused a variety of learning problems, but children are constantly learning, from day one they are taking in sensory perceptions from their environment.
What does appear to be true is that the main causes of this learning disability come from how the brain processes information from spoken and written language. This information is neurologically impaired by certain factors in the brain, resulting in dyslexia. Dyslexia is not related to intelligence; even the most brilliant people may be affected by this disorder that originates in the brain.
It is clear that one of the main precursors of the learning disability is heredity. If dyslexia is, indeed, hereditary, then families pass the potential for the dyslexia from generation to generation. This area of dyslexic study has generated a lot of interest, but there is still much research and study to be done to determine and isolate particular genetic factors that contribute to the learning disability.
Interesting developments in the study of dyslexia include the discovery of a network of cells beneath the surface of the brain in people with dyslexia. In the normal neurological development process these cells move from just beneath the surface to along the surface shortly after birth. In dyslexic people the cells do not make the move for some reason. These ectopic cells are found in the front and left of the brain, the very areas known to be important for performing reading and writing.
While the scientific explanations help us understand more about dyslexia, they do not explain why the number of dyslexic cases is growing. As the numbers continue to increase, more time, effort, and money will be spent on therapy and structured learning for dyslexic children. However, before the problem of dyslexia can be rectified, the root causes have to be discovered.