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Powell, Sarah R.; Doabler, Christian T.; Akinola, Olayemi A.; Therrien, William J.; Maddox, Steven A.; Hess, Katherine E. – Journal of Learning Disabilities, 2020
In this synthesis, we reviewed 65 studies involving elementary students (i.e., grades 1-5) identified with mathematics difficulty (MD) in which authors implemented a mathematics intervention. Of these studies, we identified 33 group designs, 9 quasi-experimental designs, and 23 single-case designs. We aimed to synthesize performance differences…
Descriptors: Intervention, Reading Difficulties, Comorbidity, Mathematics Skills
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Heikkilä, Riikka; Torppa, Minna; Aro, Mikko; Närhi, Vesa; Ahonen, Timo – Journal of Learning Disabilities, 2016
This study explored the double-deficit hypothesis (DDH) in a transparent orthography (Finnish) and extended the view from reading disabilities to comorbidity of learning-related problems in math and attention. Children referred for evaluation of learning disabilities in second through sixth grade (N = 205) were divided into four groups based on…
Descriptors: Hypothesis Testing, Foreign Countries, Finno Ugric Languages, Reading Difficulties
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De Weerdt, Frauke; Desoete, Annemie; Roeyers, Herbert – Journal of Learning Disabilities, 2013
Elementary school children with reading disabilities (RD; "n" = 17), mathematical disabilities (MD; "n" = 22), or combined reading and mathematical disabilities (RD+MD; "n" = 28) were compared to average achieving (AA; "n" = 45) peers on working memory measures. On all working memory components, 2 (RD vs. no…
Descriptors: Elementary School Students, Short Term Memory, Reading Difficulties, Mathematics Skills
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Sideridis, Georgios; Padeliadu, Susana – Journal of Learning Disabilities, 2013
The purpose of the present studies was to provide the means to create brief versions of instruments that can aid the diagnosis and classification of students with learning disabilities and comorbid disorders (e.g., attention-deficit/hyperactivity disorder). A sample of 1,108 students with and without a diagnosis of learning disabilities took part…
Descriptors: Test Construction, Learning Disabilities, Disability Identification, Classification