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Direct linkSiu, Michelle T.; Goodman, Sarah J.; Yellan, Isaac; Butcher, Darci T.; Jangjoo, Maryam; Grafodatskaya, Daria; Rajendram, Rageen; Lou, Youliang; Zhang, Rujun; Zhao, Chunhua; Nicolson, Rob; Georgiades, Stelios; Szatmari, Peter; Scherer, Stephen W.; Roberts, Wendy; Anagnostou, Evdokia; Weksberg, Rosanna – Journal of Autism and Developmental Disorders, 2021
Many neurodevelopmental disorders (NDDs) share common learning and behavioural impairments, as well as features such as dysregulation of the oxytocin hormone. Here, we examined DNA methylation (DNAm) in the 1st intron of the oxytocin receptor gene, "OXTR," in patients with autism spectrum (ASD), attention deficit and hyperactivity (ADHD)…
Descriptors: Genetics, Autism, Pervasive Developmental Disorders, Biochemistry
Rosenberg, Jenni; Pennington, Bruce F.; Willcutt, Erik G.; Olson, Richard K. – Journal of Child Psychology and Psychiatry, 2012
Background: Reading disability (RD) and attention deficit/hyperactivity disorder (ADHD) are comorbid and genetically correlated, especially the inattentive dimension of ADHD (ADHD-I). However, previous research indicates that RD and ADHD enter into opposite gene by environment (G x E) interactions. Methods: This study used behavioral genetic…
Descriptors: Attention Deficit Hyperactivity Disorder, Twins, Learning Disabilities, Genetics
Haworth, Claire M. A.; Kovas, Yulia; Harlaar, Nicole; Hayiou-Thomas, Marianna E.; Petrill, Stephen A.; Dale, Philip S.; Plomin, Robert – Journal of Child Psychology and Psychiatry, 2009
Background: Our previous investigation found that the same genes influence poor reading and mathematics performance in 10-year-olds. Here we assess whether this finding extends to language and general cognitive disabilities, as well as replicating the earlier finding for reading and mathematics in an older and larger sample. Methods: Using a…
Descriptors: Twins, Children, Learning Disabilities, Genetics
Copet, P.; Jauregi, J.; Laurier, V.; Ehlinger, V.; Arnaud, C.; Cobo, A. -M.; Molinas, C.; Tauber, M.; Thuilleaux, D. – Journal of Intellectual Disability Research, 2010
Background: Prader-Willi syndrome (PWS) is a rare genetic disorder characterised by developmental abnormalities leading to somatic and psychological symptoms. These include dysmorphic features, impaired growth and sexual maturation, hyperphagia, intellectual delay, learning disabilities and maladaptive behaviours. PWS is caused by a lack of…
Descriptors: Genetic Disorders, Intelligence, Body Composition, Mental Retardation
Del'Homme, Melissa; Kim, Tae S.; Loo, Sandra K.; Yang, May H.; Smalley, Susan L. – Journal of Abnormal Child Psychology, 2007
In a sample of 235 families with at least two children with Attention-Deficit/ Hyperactivity Disorder (ADHD), the frequency and familial association of learning disabilities (LD) were assessed. Familiality was examined both between sibling pairs and between parents and their children. Two methods for defining LD, a discrepancy-based and a…
Descriptors: Incidence, Siblings, Learning Disabilities, Hyperactivity
Johansson, Maria; Billstedt, Eva; Danielsson, Susanna; Stromland, Kerstin; Miller, Marilyn; Granstrom, Gosta; Flodmark, Olof; Rastam, Maria; Gillberg, Christopher – Developmental Medicine & Child Neurology, 2007
As part of a multidisciplinary study, the rate of autism spectrum disorder (ASD), learning disability (LD), and brain abnormalities was examined in 20 participants (12 males, 8 females; age range 8mo-17y, mean age 8y 1mo) diagnosed as falling within the oculoauriculovertebral spectrum (OAV). A neuropsychiatric examination was performed, including…
Descriptors: Intelligence, Autism, Learning Disabilities, Patients
Haworth, Claire M. A.; Meaburn, Emma L.; Harlaar, Nicole; Plomin, Robert – Mind, Brain, and Education, 2007
Twin-study research suggests that many (but not all) of the same genes contribute to genetic influence on diverse learning abilities and disabilities, a hypothesis called "generalist genes". This generalist genes hypothesis was tested using a set of 10 DNA markers (single nucleotide polymorphisms [SNPs]) found to be associated with early reading…
Descriptors: Early Reading, Prevention, Learning Disabilities, Genetics
Kates, Wendy R.; Krauss, Beth R.; AbdulSabur, Nuria; Colgan, Deirdre; Antshel, Kevin M.; Higgins, Anne Marie; Shprintzen, Robert J. – Neuropsychologia, 2007
Velocardiofacial syndrome (VCFS), also known as 22q11.2 deletion syndrome, is a neurogenetic disorder that is associated with both learning disabilities and a consistent neuropsychological phenotype, including deficits in executive function, visuospatial perception, and working memory. Anatomic imaging studies have identified significant…
Descriptors: Phonology, Diagnostic Tests, Siblings, Learning Disabilities
