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Nash, Hannah M.; Gooch, Debbie; Hulme, Charles; Mahajan, Yatin; McArthur, Genevieve; Steinmetzger, Kurt; Snowling, Margaret J. – Developmental Science, 2017
The "automatic letter-sound integration hypothesis" (Blomert, [Blomert, L., 2011]) proposes that dyslexia results from a failure to fully integrate letters and speech sounds into automated audio-visual objects. We tested this hypothesis in a sample of English-speaking children with dyslexic difficulties (N = 13) and samples of…
Descriptors: Dyslexia, Phoneme Grapheme Correspondence, Control Groups, Diagnostic Tests
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Lyle, Keith B.; Martin, Jessica M. – Brain and Cognition, 2010
Retrieval of memories is enhanced when bilateral saccades are made immediately before attempting retrieval. One hypothesis is that saccades enhance retrieval by increasing interaction of the brain hemispheres. To test this, subjects viewed arrays of lateralized letters and indicated whether target letters matched either of two probe letters.…
Descriptors: Brain Hemisphere Functions, Cognitive Processes, Memory, Task Analysis
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Gaffrey, Michael S.; Kleinhans, Natalia M.; Haist, Frank; Akshoomoff, Natacha; Campbell, Ashley; Courchesne, Eric; Muller, Ralph-Axel – Neuropsychologia, 2007
Language delay and impairment are salient features of autism. More specifically, there is evidence of atypical semantic organization in autism, but the functional brain correlates are not well understood. The current study used functional MRI to examine activation associated with semantic category decision. Ten high-functioning men with autism…
Descriptors: Visual Stimuli, Control Groups, Semantics, Autism
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de Jong, Peter F.; Vrielink, Lidy Oude – Annals of Dyslexia, 2004
One explanation for the relationship between serial rapid naming (SRN) and reading is that SRN affects the temporal proximity of the phonological activation of the letters in a word, which, in turn, influences the acquisition of orthographic knowledge. To test this hypothesis, a group of Dutch first grade children was trained in the rapid serial…
Descriptors: Grade 1, Beginning Reading, Reading Instruction, Foreign Countries