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Tosto, Maria G.; Hayiou-Thomas, Marianna E.; Harlaar, Nicole; Prom-Wormley, Elizabeth; Dale, Philip S.; Plomin, Robert – Developmental Psychology, 2017
This study examines the genetic and environmental etiology underlying the development of oral language and reading skills, and the relationship between them, over a long period of developmental time spanning middle childhood and adolescence. It focuses particularly on the differential relationship between language and two different aspects of…
Descriptors: Twins, Genetics, Reading Fluency, Structural Equation Models
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Pieters, Stefanie; Roeyers, Herbert; Rosseel, Yves; Van Waelvelde, Hilde; Desoete, Annemie – Journal of Learning Disabilities, 2015
A relationship between motor and mathematical skills has been shown by previous research. However, the question of whether subtypes can be differentiated within developmental coordination disorder (DCD) and/or mathematical learning disability (MLD) remains unresolved. In a sample of children with and without DCD and/or MLD, a data-driven…
Descriptors: Disability Identification, Developmental Disabilities, Psychomotor Skills, Mathematics Skills
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Almas, Alisa N.; Degnan, Kathryn A.; Nelson, Charles A.; Zeanah, Charles H.; Fox, Nathan A. – Developmental Psychology, 2016
Young children removed from institutions and placed into foster care or adoptive homes have been shown to experience significant gains in IQ relative to children who remain in institutions. Less is known about the long-term impact of severe early deprivation on development in late childhood. Data are presented from a follow-up of children at 12…
Descriptors: Foreign Countries, Intelligence Quotient, Preadolescents, Foster Care
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Al-Yagon, Michal – Journal of Learning Disabilities, 2016
This study examined the role of adolescents' perceived close relationships with significant others (attachment relationships with mothers/fathers, appraisal of homeroom teacher as secure base, and quality of peer friendship) in explaining differences in their socioemotional and behavioral functioning (peer-network/peer-dyadic loneliness,…
Descriptors: Parent Child Relationship, Teacher Student Relationship, Peer Relationship, Predictor Variables
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King, Wayne M.; Giess, Sally A.; Lombardino, Linda J. – International Journal of Language & Communication Disorders, 2007
Background: The marked degree of heterogeneity in persons with developmental dyslexia has motivated the investigation of possible subtypes. Attempts have proceeded both from theoretical models of reading and the application of unsupervised learning (clustering) methods. Previous cluster analyses of data obtained from persons with reading…
Descriptors: Statistical Analysis, Reading Difficulties, Models, Databases
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LaBuda, Michele C.; And Others – Intelligence, 1987
Genetic and environmental correlations among 11 Wechsler Intelligence Scale for Children-Revised (WISC-R) subtests were estimated from a sample of 143 twin pairs using the methodology of multivariate behavioral genetics. Correlations due to within-pair environmental influences were generally small, whereas those due to shared environmental…
Descriptors: Correlation, Elementary Secondary Education, Genetics, Individual Differences