Dyslexia and definitions Flashcards
What is acquired dyslexia?
Sudden loss of reading and/or spelling following brain injury
What is developmental dyslexia?
A difficultly learning to read or spell present from birth.
What are the 3 types of acquired dyslexia?
Deep (severe), surface (irregular words) and phonological (nonsense words).
When did dyslexia appear in human history and what does this show?
When mass education meant that everybody was expected to learn to read and write. The brain doesn’t have a reading area but uses existing areas to allow you to be able to read books. This means that dyslexia is caused by disruption in one or more areas and processes that reading is reliant on.
What kind of entity is dyslexia?
A continuum- at any given age there will be people who are highly superior at reading and those who are very poor (dyslexic), but most people will be around normal reading level.
What is the problem with defining dyslexia?
Educational, medical and behavioural definitions will classify different people as not/dyslexic, and dyslexia is not a single deficit but a cluster of deficits.
What are the main points of the working definition of dyslexia by the British dyslexia association?
A learning difficulty affects skills involved in accurate and fluent work reading and spelling; difficulties in phonological awareness, verbal memory and verbal processing speed; from birth and life-long; regardless of intellect; co-occurring difficulties such as motor co-ordination, mental calculation, concentration and personal organisation; resistant to some teaching; mitigated by other methods; constitutional in origin; other strengths and talents.
Frith (1999)
Dyslexia is a neuro-developmental disorder with a biological origin which impacts speech processing (cognition) with a range of clinicala manifestations (behaviour). The impact of cultural factors which can aggravate or improve the condition is also important.
What are the key characteristics of dyslexia behaviour?
Reading and spelling fluency and accuracy; phonological awareness; verbal processing speed; verbal short term memory.
What is phonological awareness used for in reading and spelling?
Grapheme-phoneme conversion: break down words into their parts representing sounds (graphemes) and convert them into sounds that represent the letters (phonemes). Also blending words together, sequencing, rhyming, pronouncing long words and recognising sounds in words e.g. fat, cat, mat.
What are some examples of phonological awareness tests?
Blending: What do these sounds make “pen-sul”.
Elision: Say sunshine without saying “sun”
Sound matching: which words start or end with the same sound.
What is poor verbal memory in dyslexia?
Less efficient use of verbal codes for remembering verbal items in short term- doesn’t apply to other forms of memory. Verbal memory helps with decoding new words, sentences and meanings, and affects phonological processing.
What are example tests for verbal memory?
Digit span: memory for digits
Non-word repetition:
e.g. Teeg, Nabe, Voesutive.
What is verbal processing speed in dyslexia?
Difficulty processing and remembering information seen and heard. This can affect learning and acquisition of literacy skills. Dyslexic people are slower on naming tasks.
Neuhaus et al (2001)
Pause times on a letter task are more predictive of reading skills than articulation errors or colour/objects.