Dyslexia, also known until the 1960s as word blindness, is a disorder characterized by reading below the expected level for one's age. Different people are affected to different degrees. Problems may include difficulties in spelling words, reading quickly, writing words, "sounding out" words in the head, pronouncing words when reading aloud and understanding what one reads. Often these difficulties are first noticed at school. The difficulties are involuntary, and people with this disorder have a normal desire to learn. People with dyslexia have higher rates of attention deficit hyperactivity disorder (ADHD), developmental language disorders, and difficulties with numbers.
Phonological awareness is an individual's awareness of the phonological structure, or sound structure, of words. Phonological awareness is an important and reliable predictor of later reading ability and has, therefore, been the focus of much research.
A reading disability is a condition in which a person displays difficulty reading. Examples of reading disabilities include: developmental dyslexia, alexia, and hyperlexia.
Learning disability, learning disorder, or learning difficulty is a condition in the brain that causes difficulties comprehending or processing information and can be caused by several different factors. Given the "difficulty learning in a typical manner", this does not exclude the ability to learn in a different manner. Therefore, some people can be more accurately described as having a "learning difference", thus avoiding any misconception of being disabled with a lack of ability to learn and possible negative stereotyping. In the United Kingdom, the term "learning disability" generally refers to an intellectual disability, while conditions such as dyslexia and dyspraxia are usually referred to as "learning difficulties".
The phonological deficit hypothesis is a prevalent cognitive-level explanation for the cause of reading difficulties and dyslexia. It stems from evidence that individuals with dyslexia tend to do poorly on tests which measure their ability to decode nonsense words using conventional phonetic rules, and that there is a high correlation between difficulties in connecting the sounds of language to letters and reading delays or failure in children.
Management of dyslexia depends on a multiple of variables; there is no one specific strategy or set of strategies which will work for all who have dyslexia.
The Center for Research, Evaluation and Awareness of Dyslexia is a university-based program at Pittsburg State University, Pittsburg, Kansas. It was established in 1996 to develop strategies for the prevention and remediation of reading disabilities, search for strategies that will lead to the improvement of remedial processes, provide educators and parents with current and appropriate knowledge regarding reading/learning disabilities, provide interdisciplinary evaluations of readers of all ages, promote the concerns relevant to reading disabilities and educate the general public regarding issues pertaining to reading/learning disabilities.
Language-based learning disabilities or LBLD are "heterogeneous" neurological differences that can affect skills such as listening, reasoning, speaking, reading, writing, and math calculations. It is also associated with movement, coordination, and direct attention. LBLD is not usually identified until the child reaches school age. Most people with this disability find it hard to communicate, to express ideas efficiently and what they say may be ambiguous and hard to understand It is a neurological difference. It is often hereditary, and is frequently associated to specific language problems.
The history of dyslexia research spans from the late 1800s to the present.
Dyslexia is a reading disorder wherein an individual experiences trouble with reading. Individuals with dyslexia have normal levels of intelligence but can exhibit difficulties with spelling, reading fluency, pronunciation, "sounding out" words, writing out words, and reading comprehension. The neurological nature and underlying causes of dyslexia are an active area of research. However, some experts believe that the distinction of dyslexia as a separate reading disorder and therefore recognized disability is a topic of some controversy.
Dyslexia is a complex, lifelong disorder involving difficulty in learning to read or interpret words, letters and other symbols. Dyslexia does not affect general intelligence, but is often co-diagnosed with ADHD. There are at least three sub-types of dyslexia that have been recognized by researchers: orthographic, or surface dyslexia, phonological dyslexia and mixed dyslexia where individuals exhibit symptoms of both orthographic and phonological dyslexia. Studies have shown that dyslexia is genetic and can be passed down through families, but it is important to note that, although a genetic disorder, there is no specific locus in the brain for reading and writing. The human brain does have language centers, but written language is a cultural artifact, and a very complex one requiring brain regions designed to recognize and interpret written symbols as representations of language in rapid synchronization. The complexity of the system and the lack of genetic predisposition for it is one possible explanation for the difficulty in acquiring and understanding written language.
Dyslexia is a disorder characterized by problems with the visual notation of speech, which in most languages of European origin are problems with alphabet writing systems which have a phonetic construction. Examples of these issues can be difficulties speaking in full sentences, problems correctly articulating Rs and Ls as well as Ms and Ns, mixing up sounds in multi-syllabic words, problems of immature speech such as "wed and gween" instead of "red and green".
Rapid automatized naming (RAN) is a task that measures how quickly individuals can name aloud objects, pictures, colors, or symbols. Variations in rapid automatized naming time in children provide a strong predictor of their later ability to read, and is independent from other predictors such as phonological awareness, verbal IQ, and existing reading skills. Importantly, rapid automatized naming of pictures and letters can predict later reading abilities for pre-literate children.
Kenneth R. Pugh is president, director of research, and a senior scientist at Haskins Laboratories in New Haven, Connecticut and professor in the Department of Psychology at University of Connecticut. He is also an associate professor in the Department of Linguistics at Yale University, an associate professor in the Department of Diagnostic Radiology at the Yale School of Medicine, and director of the Yale Reading Center. Pugh is a cognitive neuroscientist and experimental psychologist who is best known for his work on the neural, behavioral and cognitive underpinnings of reading and other cognitive activities.
Educational neuroscience is an emerging scientific field that brings together researchers in cognitive neuroscience, developmental cognitive neuroscience, educational psychology, educational technology, education theory and other related disciplines to explore the interactions between biological processes and education. Researchers in educational neuroscience investigate the neural mechanisms of reading, numerical cognition, attention and their attendant difficulties including dyslexia, dyscalculia and ADHD as they relate to education. Researchers in this area may link basic findings in cognitive neuroscience with educational technology to help in curriculum implementation for mathematics education and reading education. The aim of educational neuroscience is to generate basic and applied research that will provide a new transdisciplinary account of learning and teaching, which is capable of informing education. A major goal of educational neuroscience is to bridge the gap between the two fields through a direct dialogue between researchers and educators, avoiding the "middlemen of the brain-based learning industry". These middlemen have a vested commercial interest in the selling of "neuromyths" and their supposed remedies.
The Planning, Attention-Arousal, Simultaneous and Successive (P.A.S.S.) theory of intelligence, first proposed in 1975 Das, Kirby, and Jarman (1975), and later elaborated by Das, Naglieri & Kirby (1994) and Das, Kar & Parrilla (1996), challenges g-theory on the grounds that the brain is made up of interdependent, but separate, functional systems. Neuroimaging studies and clinical studies of individuals with brain lesions make it clear that the brain is modularized; for example, damage to a very specific area of the left temporal lobe will impair the production of spoken and written language. Damage to an adjacent area will have the opposite impact, preserving the individual's ability to produce, but not understand speech and text.
Dr Hollis Scarborough is an American psychologist and literacy expert who is a senior scientist at Haskins Laboratories in New Haven, Connecticut. She has been a leading researcher in the area of reading acquisition since 1981, and has been involved with efforts to improve US national policy on the teaching of reading.
Dynaread Special Education Corporation is a provider of dyslexia remediation services specifically designed for older struggling readers.
Lynn Fuchs is an educational psychologist known for research on instructional practice and assessment, reading disabilities, and mathematics disabilities. She is the Dunn Family Chair in Psychoeducational Assessment in the Department of Special Education at Vanderbilt University.
Test of Word Reading Efficiency Second Edition or commonly known as TOWRE - 2 is a kind of reading test developed to test the efficiency of reading ability of children from age 6–24 years. It generally seeks to measure an individual's accuracy and fluency regarding two efficiencies; Sight Word Efficiency (SWE) and Phonemic Decoding Efficiency (PDE). SWE measures ability of pronouncing words that are printed and PDE assesses the quantity of pronouncing phonemically regular non-words. TOWRE - 2 is a very simple test which can be administered by teachers and aides, and it only takes five minutes to complete the procedure. It is commonly used in reading research, classroom assessment and clinical practice. This test is both straightforward and easy to use because it does not require a lot of materials and can be administered by teachers and aides.