?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Theories+of+developmental+dyslexia%3A+Insights+from+a+multiple+case+study+of+dyslexic+adults%0A&rft.creator=Ramus%2C+Franck&rft.creator=Rosen%2C+Stuart&rft.creator=Dakin%2C+Steven+C.&rft.creator=Day%2C+Brian+L.&rft.creator=Castellote%2C+Juan+M.&rft.creator=White%2C+Sarah&rft.creator=Frith%2C+Uta&rft.subject=Neuropsychology&rft.subject=Developmental+Psychology&rft.subject=Psychophysics&rft.subject=Perceptual+Cognitive+Psychology&rft.subject=Clinical+Psychology&rft.subject=Behavioral+Neuroscience&rft.description=A+multiple+case+study+was+conducted+in+order+to+assess+three+leading+theories+of+developmental+dyslexia%3A+the+phonological%2C+the+magnocellular+(auditory+and+visual)+and+the+cerebellar+theories.+Sixteen+dyslexic+and+16+control+university+students+were+administered+a+full+battery+of+psychometric%2C+phonological%2C+auditory%2C+visual+and+cerebellar+tests.+Individual+data+reveal+that+all+16+dyslexics+suffer+from+a+phonological+deficit%2C+10+from+an+auditory+deficit%2C+4+from+a+motor+deficit%2C+and+2+from+a+visual+magnocellular+deficit.+Results+suggest+that+a+phonological+deficit+can+appear+in+the+absence+of+any+other+sensory+or+motor+disorder%2C+and+is+sufficient+to+cause+a+literacy+impairment%2C+as+demonstrated+by+5+of+the+dyslexics.+Auditory+disorders%2C+when+present%2C+aggravate+the+phonological+deficit%2C+hence+the+literacy+impairment.+However%2C+auditory+deficits+cannot+be+characterised+simply+as+rapid+auditory+processing+problems%2C+as+would+be+predicted+by+the+magnocellular+theory.+Nor+are+they+restricted+to+speech.+Contrary+to+the+cerebellar+theory%2C+we+find+little+support+for+the+notion+that+motor+impairments%2C+when+found%2C+have+a+cerebellar+origin%2C+or+reflect+an+automaticity+deficit.+Overall%2C+the+present+data+support+the+phonological+theory+of+dyslexia%2C+while+acknowledging+the+presence+of+additional+sensory+and+motor+disorders+in+certain+individuals.&rft.date=2002&rft.type=Preprint&rft.type=NonPeerReviewed&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Fcogprints.org%2F2350%2F1%2Fdyslexia02web.pdf&rft.identifier=++Ramus%2C+Franck+and+Rosen%2C+Stuart+and+Dakin%2C+Steven+C.+and+Day%2C+Brian+L.+and+Castellote%2C+Juan+M.+and+White%2C+Sarah+and+Frith%2C+Uta++(2002)+Theories+of+developmental+dyslexia%3A+Insights+from+a+multiple+case+study+of+dyslexic+adults.++%5BPreprint%5D++++(Unpublished)++&rft.relation=http%3A%2F%2Fcogprints.org%2F2350%2F