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The phonological deficit hypothesis is a prevalent cognitive-level explanation for the cause of reading difficulties and dyslexia. [1] 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 ...
The rapid auditory processing theory is an alternative to the phonological deficit theory, which specifies that the primary deficit lies in the perception of short or rapidly varying sounds. Support for this theory arises from evidence that people with dyslexia show poor performance on a number of auditory tasks, including frequency ...
The lexical route is the process whereby skilled readers can recognize known words by sight alone, through a "dictionary" lookup procedure. [1] [4] According to this model, every word a reader has learned is represented in a mental database of words and their pronunciations that resembles a dictionary, or internal lexicon.
Phonological processing skills make up the ability to identify and manipulate sounds in speech. Rapid automatized naming compose the ability to translate visual information whether of letters, objects or pictures into a phonological code.
[1] [2] 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. [3] Studies have shown that dyslexia is genetic and can be passed down through families.
CTOPP - 2 is a test which is administered to children as young as 5 years old to children at the age of 24 years. This test uses phonological words to assess the phonological ability of children and how well they are doing in comparison to their peers. [10] This test consists of phonological awareness, phonological memory and rapid reading. [10]
Phonological awareness is an individual's awareness of the phonological structure, or sound structure, of words. [ 1 ] [ 2 ] [ 3 ] Phonological awareness is an important and reliable predictor of later reading ability and has, therefore, been the focus of much research.
In 2008, S Heim et al. was one of the first studies not to just compare dyslexics with a non dyslexic control, but to go further and compare the different cognitive sub groups with a non dyslexic control group. Different theories conceptualise dyslexia as either a phonological, attentional, auditory, magnocellular, or automatisation deficit.