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Li, Danfeng; Zhang, Xuejing; Zhang, Li – Journal of Learning Disabilities, 2023
Developmental dyscalculia (DD) is a mathematics learning disorder that affects approximately 5% to 7% of the population. This study aimed to detect the underlying domain-specific and domain-general differences between DD and typically developing (TD) children. We recruited 9-year-old primary school children to form the DD group via a 2-year…
Descriptors: Learning Disabilities, Mathematics Skills, Elementary School Students, Developmental Delays
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Luoni, Chiara; Scorza, Maristella; Stefanelli, Silvia; Fagiolini, Barbara; Termine, Cristiano – Journal of Learning Disabilities, 2023
Developmental dyscalculia (DD) has long been thought to be determined by multiple components. Dyscalculia has high comorbidity with other learning and developmental disabilities, including reading and writing disorders, attention deficits, and problems in visual/spatial skills, short memory, and working memory. This study aims to assess prevalence…
Descriptors: Developmental Delays, Learning Disabilities, Mathematics Skills, Comorbidity
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Chen, Youzhen; Lian, Rong; Yang, Lixian; Liu, Jianrong; Meng, Yingfang – Journal of Learning Disabilities, 2017
The effects of working memory (WM) demand and reminders on an event-based prospective memory (PM) task were compared between students with low and high achievement in math. WM load (1- and 2-back tasks) was manipulated as a within-subject factor and reminder (with or without reminder) as a between-subject factor. Results showed that high-achieving…
Descriptors: Short Term Memory, Cognitive Processes, Low Achievement, High Achievement
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Wong, Terry T.-Y.; Ho, Connie S.-H.; Tang, Joey – Journal of Learning Disabilities, 2017
Developmental dyscalculia (DD) is a specific learning disability in mathematics that affects around 6% of the population. Currently, the core deficit of DD remains unknown. While the number sense deficit hypothesis suggests that the core deficit of DD lies in the inability to represent nonsymbolic numerosity, the access deficit hypothesis suggests…
Descriptors: Learning Disabilities, Mathematics Skills, Numeracy, Low Achievement
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Cavalli, Eddy; Colé, Pascale; Leloup, Gilles; Poracchia-George, Florence; Sprenger-Charolles, Liliane; El Ahmadi, Abdessadek – Journal of Learning Disabilities, 2018
Developmental dyslexia is a lifelong impairment affecting 5% to 10% of the population. In French-speaking countries, although a number of standardized tests for dyslexia in children are available, tools suitable to screen for dyslexia in adults are lacking. In this study, we administered the "Alouette" reading test to a normative sample…
Descriptors: Foreign Countries, Screening Tests, Disability Identification, Dyslexia
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Alcock, Katherine J.; Ngorosho, Damaris S.; Jukes, Matthew C. H. – Journal of Learning Disabilities, 2018
Literacy levels in Africa are low, and school instruction outcomes are not promising. Africa also has a disproportionate number of unschooled children. Phonological awareness (PA), especially phoneme awareness, is critically associated with literacy, but there is little evidence about whether PA is gained through literacy, schooling, or both,…
Descriptors: Foreign Countries, Phonological Awareness, Phonemes, Reading Skills
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Lafay, Anne; St-Pierre, Marie-Catherine; Macoir, Joël – Journal of Learning Disabilities, 2017
Numbers may be manipulated and represented mentally over a compressible number line oriented from left to right. According to numerous studies, one of the primary reasons for dyscalculia is related to improper understanding of the mental number line. Children with dyscalculia usually show difficulty when they have to place Arabic numbers on a…
Descriptors: Learning Disabilities, Grade 3, Elementary School Students, Foreign Countries
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Wang, Enguo; Du, Chenguang; Ma, Yujun – Journal of Learning Disabilities, 2017
This study reports the neurophysiological and behavioral correlates of digital memory retrieval features in Chinese individuals with and without dyscalculia. A total of 18 children with dyscalculia (ages 11.5-13.5) and 18 controls were tested, and their event-related potentials were digitally recorded simultaneously with behavior measurement.…
Descriptors: Foreign Countries, Learning Disabilities, Mathematics Skills, Children
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Callinan, Sarah; Theiler, Stephen; Cunningham, Everarda – Journal of Learning Disabilities, 2015
Traditionally, students with learning disabilities (LD) have been identified using an aptitude--achievement discrepancy or response to intervention approach. As profiles of the cognitive deficits of discrepancy-defined students with LD have already been developed using these approaches, these deficits can in turn be used to identify LD using the…
Descriptors: Learning Disabilities, Disability Identification, Low Achievement, Cognitive Tests
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Potocki, Anna; Sanchez, Monique; Ecalle, Jean; Magnan, Annie – Journal of Learning Disabilities, 2017
This article presents two studies investigating the role of executive functioning in written text comprehension in children and adolescents. In a first study, the involvement of executive functions in reading comprehension performance was examined in normally developing children in fifth grade. Two aspects of text comprehension were…
Descriptors: Executive Function, Children, Adolescents, Reading Difficulties
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Skagerlund, Kenny; Träff, Ulf – Journal of Learning Disabilities, 2016
This study investigated if developmental dyscalculia (DD) in children with different profiles of mathematical deficits has the same or different cognitive origins. The defective approximate number system hypothesis and the access deficit hypothesis were tested using two different groups of children with DD (11-13 years old): a group with…
Descriptors: Learning Disabilities, Cognitive Ability, Number Concepts, Mathematics Skills
Swanson, H. Lee; Orosco, Michael J.; Kudo, Milagros – Journal of Learning Disabilities, 2017
This cohort-sequential study explored the components of working memory (WM) that underlie second language (L2) reading growth in 450 children at risk and not at risk for reading disabilities (RD) whose first language is Spanish. English language learners designated as balanced and nonbalanced bilinguals with and without risk for RD in Grades 1, 2,…
Descriptors: Short Term Memory, Bilingualism, Reading Difficulties, Spanish Speaking
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Wang, Xiaochen; Georgiou, George K.; Das, J. P.; Li, Qing – Journal of Learning Disabilities, 2012
The purpose of the present study was twofold: (a) to examine the extent to which Chinese dyslexic children experience deficits in phonological and orthographic processing skills and (b) to examine if Chinese dyslexia is associated with deficits in Planning, Attention, Simultaneous, and Successive (PASS) processing. A total of 27 Grade 4 children…
Descriptors: Dyslexia, Reading Difficulties, Reading Fluency, Phonological Awareness
H. Lee Swanson; Catherine M. Lussier; Michael J. Orosco – Journal of Learning Disabilities, 2015
This study investigated the role of strategy instruction and working memory capacity (WMC) on word problem solving accuracy in children with (n = 100) and without (n = 92) math difficulties (MD). Within classrooms, children in Grades 2 and 3 were randomly assigned to one of four treatment conditions: verbal-only strategies (e.g., underlining…
Descriptors: Cognitive Style, Learning Strategies, Short Term Memory, Problem Solving
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Gustafson, Stefan; Falth, Linda; Svensson, Idor; Tjus, Tomas; Heimann, Mikael – Journal of Learning Disabilities, 2011
In a longitudinal intervention study, the effects of three intervention strategies on the reading skills of children with reading disabilities in Grade 2 were analyzed. The interventions consisted of computerized training programs: One bottom-up intervention aimed at improving word decoding skills and phonological abilities, the second…
Descriptors: Reading Difficulties, Intervention, Disabilities, Decoding (Reading)