Definition of Dyslexia

"Dyslexia is a special learning disorder derived from neurobiology, which is characterized by the difficulty of accurate and / or fluid word recognition, and the difficulty of spelling and deciphering.The other cognitive abilities, Secondary consequences as a result of an unexpected situation related to effective teaching of the lesson are reading comprehension problems and declining reading comprehension possibly hindering the development of vocabulary and background knowledge.

It was adopted by the IDA Board on November 12, 2002. This definition is used in educational regulations of many states, such as New Jersey, Ohio, Utah. Learn more about how to reach an agreement with this definition: Defining an agreement project

It is not clear how many adults have dyslexia. The lack of a unified definition of dyslexia makes researchers hard to learn. Various estimates suggest that as many as 5% to 10% of the population may have dyslexia. Normally diagnosed in childhood, some people have never been diagnosed. If you were difficult to read, you are very likely to have dyslexia

This definition is the basis of the so-called difference based dyslexia perspective (Fletcher et al., 2007). This definition assumes dyslexia is "coincidence" difficulty in reading. "Unexpected" dyslexia is regarded as dyslexia in children and adults, but all factors are important for developing fluent reading (motivation, intelligence, excellent instruction), but still hard to read (Shaywitz 1998). More worthwhile is how to achieve the unexpected nature of dyslexia. Thus, using various methods and criteria, the definition attempts to capture the "coincidence" nature of dyslexia by requiring a degree of difference between the child's IQ and his reading performance.

The definition of dyslexia has changed based on the growing knowledge and understanding of discussions over the years of dyslexia. There are many ways to define dyslexia such as dyslexia, difference, determination of positive indicators. Frith (1999) emphasizes the definition of dyslexia. Dyslexia can be defined as a neurodevelopmental disorder with signs of biological origin and behavior, far beyond the language of writing. At cognitive level, you can specify behavioral signs and symptoms of symptoms ('p, 192)