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Yeari, Menahem; Isser, Michal; Schiff, Rachel – Annals of Dyslexia, 2017
A controversy has recently developed regarding the hypothesis that developmental dyslexia may be caused, in some cases, by a reduced visual attention span (VAS). To examine this hypothesis, independent of phonological abilities, researchers tested the ability of dyslexic participants to recognize arrays of unfamiliar visual characters. Employing…
Descriptors: Dyslexia, Attention Span, Visual Perception, Visual Discrimination
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Peyrin, C.; Lallier, M.; Demonet, J. F.; Pernet, C.; Baciu, M.; Le Bas, J. F.; Valdois, S. – Brain and Language, 2012
A dissociation between phonological and visual attention (VA) span disorders has been reported in dyslexic children. This study investigates whether this cognitively-based dissociation has a neurobiological counterpart through the investigation of two cases of developmental dyslexia. LL showed a phonological disorder but preserved VA span whereas…
Descriptors: Evidence, Attention Span, Dyslexia, Attention
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Tormanen, Minna R. K.; Takala, Marjatta; Sajaniemi, Nina – Support for Learning, 2008
This study examined whether audiovisual computer training without linguistic material had a remedial effect on different learning disabilities, like dyslexia and ADD (Attention Deficit Disorder). This study applied a pre-test-intervention-post-test design with students (N = 62) between the ages of 7 and 19. The computer training lasted eight weeks…
Descriptors: Learning Disabilities, Dyslexia, Attention Deficit Disorders, Students
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Cohen, Andrew L.; Shapiro, Steven K. – Journal of Attention Disorders, 2007
Objective: To examine the ability of the flicker task to demonstrate greater utility in discriminating performance in young adults with and without ADHD compared to the Conners' CPT (CCPT). Method: Flicker task and CCPT performance were compared between an ADHD (n = 28) and control (n = 30) group of college students. Results: This study replicated…
Descriptors: Performance Tests, Hyperactivity, Attention Deficit Disorders, Rating Scales
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Toplak, Maggie E.; Tannock, Rosemary – Journal of Abnormal Child Psychology, 2005
Time perception performance was systematically investigated in adolescents with and without attention-deficit/hyperactivity disorder (ADHD). Specifically, the effects of manipulating modality (auditory and visual) and length of duration (200 and 1000 ms) were examined. Forty-six adolescents with ADHD and 44 controls were administered four duration…
Descriptors: Memory, Adolescents, Hyperactivity, Auditory Discrimination