Here at Edwards Orton-Gillingham, we prefer to call this a language-based learning difference. These differences refer to the understanding and application of written and spoken language. An individual with a language-based learning difference/disability may struggle with the development of reading, writing, or spelling.
Language-based learning differences don’t have anything to do with an individual’s IQ. In fact, many people diagnosed with a language-based learning difference have extremely high intelligence.
Approximately 15-20% of the population has a language-based learning difference or learning disability, the most common of which is dyslexia.