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"Reading disabilities"
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Deep learning classification of reading disability with regional brain volume features
•Deformation-based deep learning was used to classify reading disability.•Autoencoder pretraining optimized neural network classification accuracy.•Reading disability classification precision (0.75) and recall (0.78) was observed.•Brain regions were differentially predictive of cases and controls.•Classification probability related to non-word and real word reading abilities.
Developmental reading disability is a prevalent and often enduring problem with varied mechanisms that contribute to its phenotypic heterogeneity. This mechanistic and phenotypic variation, as well as relatively modest sample sizes, may have limited the development of accurate neuroimaging-based classifiers for reading disability, including because of the large feature space of neuroimaging datasets. An unsupervised learning model was used to reduce deformation-based data to a lower-dimensional manifold and then supervised learning models were used to classify these latent representations in a dataset of 96 reading disability cases and 96 controls (mean age: 9.86 ± 1.56 years). A combined unsupervised autoencoder and supervised convolutional neural network approach provided an effective classification of cases and controls (accuracy: 77%; precision: 0.75; recall: 0.78). Brain regions that contributed to this classification accuracy were identified by adding noise to the voxel-level image data, which showed that reading disability classification accuracy was most influenced by the superior temporal sulcus, dorsal cingulate, and lateral occipital cortex. Regions that were most important for the accurate classification of controls included the supramarginal gyrus, orbitofrontal, and medial occipital cortex. The contribution of these regions reflected individual differences in reading-related abilities, such as non-word decoding or verbal comprehension. Together, the results demonstrate an optimal deep learning solution for classification using neuroimaging data. In contrast with standard mass-univariate test results, results from the deep learning model also provided evidence for regions that may be specifically affected in reading disability cases.
Journal Article
100 ideas for primary teachers : supporting children with dyslexia
Making your lessons fun, engaging and effective for all learners, including those with dyslexia, can be challenging and you can soon run out of ideas. This book offers 100 practical, ready-to-use activities to help all primary teachers with their every day lesson planning. The tried-and-tested activities cover all the key areas of the primary curriculum, including maths, spelling and creative writing, plus a wide range of ideas for teachers on differentiation, memory strategies and planning for learning. This new book is essential for all primary teachers and SENCOs who want to ensure that they are continually providing for all children in their care. Includes: teaching tips; taking it further ideas; quotes from teachers and pupils; bonus ideas; and online resources.
Book
Neurite density and arborization is associated with reading skill and phonological processing in children
Studies exploring neuroanatomic correlates of reading have associated white matter tissue properties with reading disability and related componential skills (e.g., phonological and single-word reading skills). Mean diffusivity (MD) and fractional anisotropy (FA) are widely used surrogate measures of tissue microstructure with high sensitivity; however, they lack specificity for individual microstructural features. Here we investigated neurite features with higher specificity in order to explore the underlying microstructural architecture.
Diffusion weighted images (DWI) and a battery of behavioral and neuropsychological assessments were obtained from 412 children (6 – 16 years of age). Neurite indices influenced by orientation and density were attained from 23 major white matter tracts. Partial correlations were calculated between neurite indices and indicators of phonological processing and single-word reading skills using age, sex, and image quality metrics as covariates. In addition, mediation analysis was performed using structural equation modeling (SEM) to evaluate the indirect effect of phonological processing on reading skills.
We observed that orientation dispersion index (ODI) and neurite density index (NDI) were negatively correlated with single-word reading and phonological processing skills in several tracts previously shown to have structural correlates with reading efficiency. We also observed a significant and substantial effect in which phonological processing mediated the relationship between neurite indices and reading skills in most tracts.
In sum, we established that better reading and phonological processing skills are associated with greater tract coherence (lower ODI) and lower neurite density (lower NDI). We interpret these findings as evidence that reading is associated with neural architecture and its efficiency.
Journal Article
Predicting adult-age mental health with childhood reading and math disability: do resilience and coping styles matter?
We studied the associations between childhood-identified learning disabilities and adult-age mental health and whether adult-age reading and math skills, coping styles, or resilience influenced the associations. The participants were 159 Finnish adults (60.4% males). Of them, 48 (30%) had a reading disability (RD), 22 (14%) had a math disability (MD), 21 (13%) had RD + MD identified in childhood, and 68 (43%) were population-based controls, matched based on gender, age, and place of residence. At ages 20–40 (Mage = 29), they reported their mental health, coping styles, and resilience, and their reading and math skills were assessed. The hierarchical regression analyses, predicting mental health with RD, MD, and their interaction while controlling for gender and age, indicated that childhood MD predicted the occurrence of more mental health problems in adulthood, but this was not observed in the case of RD. The RDxMD positive interaction effect reflected better mental health in both the RD and the RD + MD groups than in the MD group. Controlling for adult-age reading and math skills had no effect on the association between MD and mental health outcomes while controlling for resilience and coping styles diminished the impact of MD. Strong resilience without the use of an emotion-oriented coping may thus alleviate the association between MD and mental health. As childhood MD can have long-term associations with mental health problems, these issues need to be addressed in school, at work, and in healthcare. Based on our findings, strengthening effective coping and resilience may be one avenue of support.
Journal Article
Dyslexia in the twenty-first century: a commentary on the IDA definition of dyslexia
In offering a commentary upon the IDA definition, we address its main components in turn. While each is technically accurate, we argue that, when taken together, the definition, or more accurately, the use to which it is often put, becomes problematic. We outline different current conceptions of dyslexia and conclude that the operationalisation of the definition for diagnostic purposes often results in scientifically questionable diagnoses and inadvertently leads to significant educational inequity. We propose a simpler definition that describes the primary difficulty, avoids reference to causal explanation, unexpectedness, and secondary outcomes, and redirects practitioner and policymaker focus to the importance of addressing and meeting the needs of all struggling readers.
Journal Article
Phonological awareness : from research to practice
\"Translating cutting-edge research into practical recommendations for assessment and instruction, this book has helped thousands of readers understand the key role of phonological awareness in the development of reading, writing, and spelling. It clearly shows how children's knowledge about the sound structure of spoken language contributes to literacy acquisition. Evidence-based strategies are described for enhancing all learners' phonological awareness and effectively supporting those who are struggling (ages 3-17). The book discusses ways to tailor instruction and intervention for a broad range of students, including English language learners (ELLs) and those with reading or language disorders. Subject Areas/Key Words: phonological awareness, phonological skills, phonemic awareness, phonemes, phonology, phonics, spoken language impairments, oral language, written language, reading development, early literacy development, oracy, speaking, teaching, assessments, interventions, instructional approaches, speech-language pathologists, speech-language pathology, special education, struggling learners, speech problems, speech disorders, learning disabilities, learning disorders, specific language impairments, dyslexia, reading disorders, spelling development, English language learners, at-risk students, speech-language therapists, early childhood education, preschoolers; English as a second language; second-language acquisition; learning multiple languages; metalinguistics; sounds Audience: Reading specialists, teachers, and special educators working with children ages 3-17 (PreK-12); speech-language pathologists; school psychologists\"-- Provided by publisher.
Book
Language Deficits in Poor Comprehenders: A Case for the Simple View of Reading
Susan Ellis Weismer
Waisman Center, University of WisconsinMadison
Contact author: Hugh W. Catts, Department of Speech, Language, Hearing, 1000 Sunnyside Avenue, University of Kansas, Lawrence, KS, 66045. Email: catts{at}ku.edu
PURPOSE: To examine concurrently and retrospectively the language abilities of children with specific reading comprehension deficits (\"poor comprehenders\") and compare them to typical readers and children with specific decoding deficits (\"poor decoders\").
METHOD: In Study 1, the authors identified 57 poor comprehenders, 27 poor decoders, and 98 typical readers on the basis of 8th-grade reading achievement. These subgroups' performances on 8th-grade measures of language comprehension and phonological processing were investigated. In Study 2, the authors examined retrospectively subgroups' performances on measures of language comprehension and phonological processing in kindergarten, 2nd, and 4th grades. Word recognition and reading comprehension in 2nd and 4th grades were also considered.
RESULTS: Study 1 showed that poor comprehenders had concurrent deficits in language comprehension but normal abilities in phonological processing. Poor decoders were characterized by the opposite pattern of language abilities. Study 2 results showed that subgroups had language (and word recognition) profiles in the earlier grades that were consistent with those observed in 8th grade. Subgroup differences in reading comprehension were inconsistent across grades but reflective of the changes in the components of reading comprehension over time.
CONCLUSIONS: The results support the simple view of reading and the phonological deficit hypothesis. Furthermore, the findings indicate that a classification system that is based on the simple view has advantages over standard systems that focus only on word recognition and/or reading comprehension.
KEY WORDS: poor comprehenders, specific reading comprehension deficit, simple view of reading, phonological processing, language comprehension deficits
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Journal Article