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Tambulukani, Geofrey; Bus, Adriana G. – Applied Linguistics, 2012
A lack of familiarity with the language of teaching is blamed for illiteracy rates beyond 40% among people who live in nations in Africa or Asia in which dozens of languages are spoken. For a critical test of the importance of familiarity with the language in which initial reading is practiced, we took the Zambian situation as a natural experiment…
Descriptors: Reading Fluency, Language of Instruction, Familiarity, Illiteracy
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Kegel, Cornelia A. T.; Bus, Adriana G. – Journal of Child Psychology and Psychiatry, 2013
Background: The dopamine D4 receptor gene (DRD4) has been linked to attention deficit hyperactivity disorder (ADHD) and reading disorders. In this study, we examined whether diminished anticipatory dopamine cell firing--typical of the long variant of the DRD4 allele--is related to emergent and advanced alphabetic skills, and whether executive…
Descriptors: Genetics, Executive Function, Attention Deficit Hyperactivity Disorder, Correlation
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Verhallen, Marian J. A. J.; Bus, Adriana G. – Journal of Educational Psychology, 2010
Children from immigrant, low-income families in the Netherlands start school with a limited vocabulary in the language of instruction; therefore, this places them at risk for developing reading difficulties. Exposure to books is assumed to reduce their 2nd language (L2) vocabulary disadvantage. In this experiment, we examined the effects of video…
Descriptors: Reading Difficulties, Language of Instruction, Foreign Countries, Vocabulary Development
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Van der Kooy-Hofland, Verna A. C.; Van der Kooy, Jacoba; Bus, Adriana G.; van IJzendoorn, Marinus H.; Bonsel, Gouke J. – Journal of Educational Psychology, 2012
In a randomized control trial, the authors tested whether short- and long-term effects of an early literacy intervention are moderated by mild perinatal adversities in accordance with differential susceptibility theory. One-hundred 5-year-old children (58% male) who scored at or below the 30th percentile on early literacy measures were randomized…
Descriptors: Foreign Countries, Reading Research, Research Design, Control Groups
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Bus, Adriana G. – Psychology in the Schools, 1989
By means of educational and psychological tests, 10 reading specialists thought aloud about a simulated case of reading and spelling disability in fourth-grade boy. Protocols were transcribed and scored. Despite choosing from common information sources, experts differed substantially in diagnoses and recommendations. Found no indications for…
Descriptors: Educational Diagnosis, Foreign Countries, Grade 4, Intermediate Grades
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van Ijzendoorn, Marinus H.; Bus, Adriana G. – Reading Research Quarterly, 1994
Evaluates the hypothesis that dyslexic children have a specific deficit in phonological reading processes. Describes a quantitative meta-analysis with the same hypothesis that provides evidence for differences between dyslexics and normal readers on nonword reading tasks. Considers the weaknesses of studies finding no deficits. (HB)
Descriptors: Cognitive Processes, Dyslexia, Elementary Education, Learning Disabilities