Dyslexia, previously known as word blindness, is a learning disability that affects either reading or writing. 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 and alexia.
Haskins Laboratories, Inc. is an independent 501(c) non-profit corporation, founded in 1935 and located in New Haven, Connecticut, since 1970. Haskins has formal affiliation agreements with both Yale University and the University of Connecticut; it remains fully independent, administratively and financially, of both Yale and UConn. Haskins is a multidisciplinary and international community of researchers that conducts basic research on spoken and written language. A guiding perspective of their research is to view speech and language as emerging from biological processes, including those of adaptation, response to stimuli, and conspecific interaction. Haskins Laboratories has a long history of technological and theoretical innovation, from creating systems of rules for speech synthesis and development of an early working prototype of a reading machine for the blind to developing the landmark concept of phonemic awareness as the critical preparation for learning to read an alphabetic writing system.
Alvin Meyer Liberman was born in St. Joseph, Missouri. Liberman was an American psychologist. His ideas set the agenda for fifty years of psychological research in speech perception.
Carol Ann Fowler is an American experimental psychologist. She was president and director of research at Haskins Laboratories in New Haven, Connecticut from 1992 to 2008. She is also a professor of psychology at the University of Connecticut and adjunct professor of linguistics and psychology at Yale University. She received her undergraduate degree from Brown University in 1971, her M.A University of Connecticut in 1973 and her Ph.D. in psychology from the University of Connecticut in 1977.
Michael Studdert-Kennedy was an American psychologist and speech scientist 1927–2017.https://haskinslabs. We org/news/michael-studdert-kennedy. He is well known for his contributions to studies of speech perception, the motor theory of speech perception, and the evolution of language, among other areas. He is a professor emeritus of psychology at the University of Connecticut and a professor emeritus of linguistics at Yale University. He is the former president (1986–1992) of Haskins Laboratories in New Haven, Connecticut. He was also a member of the Haskins Laboratories Board of Directors and was chairman of the board from 1988 until 2001. He was the son of the priest and Christian socialist Geoffrey Studdert-Kennedy.
Donald P. ShankweilerArchived 2006-06-26 at the Wayback Machine is an eminent psychologist and cognitive scientist who has done pioneering work on the representation and processing of language in the brain. He is a Professor Emeritus of Psychology at the University of Connecticut, a Senior Scientist at Haskins Laboratories in New Haven, Connecticut, and a member of the Board of Directors Archived 2021-01-26 at the Wayback Machine at Haskins. He is married to well-known American philosopher of biology, psychology, and language Ruth Millikan.
Isabelle Yoffe Liberman (1918–1990) was an American psychologist, born in Latvia, who was an expert on reading disabilities, including dyslexia. Isabelle Liberman received her bachelor's degree from Vassar College and her doctorate from Yale University. She was a professor at the University of Connecticut from 1966 through 1987 and a research associate at the Haskins Laboratories.
Reading is the process of taking in the sense or meaning of symbols, often specifically those of a written language, by means of sight or touch.
Leonard Katz (1938–2017) was an American experimental psychologist, born in Boston, Massachusetts. He was a professor of psychology at the University of Connecticut (1965–2006) and then professor emeritus until 2017. He was a Fellow of the American Association for the Advancement of Science and the Association for Psychological Science.
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. Although it is 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 problems 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.
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.
The following outline is provided as an overview of and topical guide to dyslexia: