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Koen, Bobbie Jean; Hawkins, Jacqueline; Zhu, Xi; Jansen, Ben; Fan, Weihua; Johnson, Sharon – Journal of Learning Disabilities, 2018
Fluency is used as an indicator of reading proficiency. Many students with reading disabilities are unable to benefit from typical interventions. This study is designed to replicate Lorusso, Facoetti, Paganoni, Pezzani, and Molteni's (2006) work using FlashWord, a computer program that tachistoscopically presents words in the right or left visual…
Descriptors: Reading Fluency, Reading Skills, Reading Difficulties, Visual Stimuli
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Al Dahhan, Noor Z.; Kirby, John R.; Brien, Donald C.; Munoz, Douglas P. – Journal of Learning Disabilities, 2017
Naming speed (NS) refers to how quickly and accurately participants name a set of familiar stimuli (e.g., letters). NS is an established predictor of reading ability, but controversy remains over why it is related to reading. We used three techniques (stimulus manipulations to emphasize phonological and/or visual aspects, decomposition of NS times…
Descriptors: Dyslexia, Comparative Analysis, Eye Movements, Visual Stimuli
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Lambert, Katharina; Spinath, Birgit – Journal of Learning Disabilities, 2018
The aim of the present study was to investigate the associations between elementary school children's mathematical achievement and their conservation abilities, visuospatial skills, and numerosity processing speed. We also assessed differences in these abilities between children with different types of learning problems. In Study 1 (N = 229), we…
Descriptors: Correlation, Elementary School Students, Elementary School Mathematics, Visual Perception
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van Viersen, Sietske; Kroesbergen, Evelyn H.; Slot, Esther M.; de Bree, Elise H. – Journal of Learning Disabilities, 2016
This study investigated how gifted children with dyslexia might be able to mask literacy problems and the role of possible compensatory mechanisms. The sample consisted of 121 Dutch primary school children that were divided over four groups (typically developing [TD] children, children with dyslexia, gifted children, gifted children with…
Descriptors: Dyslexia, Academically Gifted, Reading Skills, Elementary School Students
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Brandenburg, Janin; Klesczewski, Julia; Fischbach, Anne; Schuchardt, Kirsten; Büttner, Gerhard; Hasselhorn, Marcus – Journal of Learning Disabilities, 2015
In transparent orthographies like German, isolated learning disabilities in either reading or spelling are common and occur as often as a combined reading and spelling disability. However, most issues surrounding the cognitive causes of these isolated or combined literacy difficulties are yet unresolved. Recently, working memory dysfunctions have…
Descriptors: Foreign Countries, Elementary School Students, Children, Learning Disabilities
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Vellutino, Frank R. – Journal of Learning Disabilities, 1979
In the article the author refutes J. Fletcher and P. Satz's analysis of the etiology of reading disability on logical, theoretical, and empirical grounds. (Author/PHR)
Descriptors: Etiology, Exceptional Child Research, Hypothesis Testing, Learning Disabilities
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Fletcher, Jack M.; Satz, Paul – Journal of Learning Disabilities, 1979
In the rejoinder the authors describe the methodological and interpretive factors in the Vellutino et al, experiments which limited the degree to which the studies refuted perceptual deficit hypotheses of reading disability. Note: for more of the interchange see EC 114 687-688. (Author/PHR)
Descriptors: Etiology, Exceptional Child Research, Hypothesis Testing, Learning Disabilities
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Fletcher, Jack M.; Satz, Paul – Journal of Learning Disabilities, 1979
The paper evaluates the empirical and theoretical basis upon which several recent studies reject the hypothesis of a visual-perceptual deficit in reading disabilities. (Author)
Descriptors: Definitions, Etiology, Exceptional Child Research, Hypothesis Testing
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Gross, Karen; Rothenberg, Stephen – Journal of Learning Disabilities, 1979
Two methodological problems often arising in dyslexia research are considered. The first problem concerns the validity of experimental measures and the related problem of interpreting null results. The second problem involves the effects of sampling from a disabled population if the disorder under investigation has multiple unknown origins.…
Descriptors: Cognitive Processes, Dyslexia, Hypothesis Testing, Learning Disabilities