Ludo Verhoeven

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In this article, we will describe the development of an assessment instrument for Sign Language of the Netherlands (SLN) for deaf children in bilingual education programs. The assessment instrument consists of nine computerized tests in which the receptive and expressive language skills of deaf children at different linguistic levels (phonology, vocabulary,(More)
PURPOSE The purpose of the present study was to determine whether kindergarten children with specific language impairment (SLI) could develop phonological awareness skills through computer intervention and whether speech manipulation (i.e., slowing speech rate and enhancing transitions) in instruction produced additional learning. METHOD The effects of a(More)
AIMS QEEG and neuropsychological tests were used to investigate the underlying neural processes in dyslexia. METHODS A group of dyslexic children were compared with a matched control group from the Brain Resource International Database on measures of cognition and brain function (EEG and coherence). RESULTS The dyslexic group showed increased slow(More)
We conducted a meta-analysis of the data from studies comparing visuospatial working memory (WM) in children with specific language impairment (SLI) and typically developing (TD) children. The effect sizes of 21 studies (including 32 visuospatial storage tasks and 9 visuospatial central executive (CE) tasks) were identified via computerized database(More)
This paper reports on one experiment in which we investigated the relationship between reading and signing skills. We administered a vocabulary task and a story comprehension task in Sign Language of the Netherlands and in written Dutch to a group of 87 deaf children from bilingual education programs. We found a strong and positive correlation between the(More)
OBJECTIVE The goal of this study was to assess the effects of screening and early treatment of preschool children for language delay on language development and school performance at age 8. METHODS A cluster-randomized, controlled trial and follow-up study of 55 child health centers in 6 geographic regions were conducted from January 2002 to September(More)
To a very large extent, children learn in and out of school from written text. Information Communications Technologies (ICT) offers many possibilities to facilitate learning by confronting children with multimodal texts. In order to be able to implement learning environments that optimally facilitate children’s learning, insight is needed into the cognitive(More)
This study examined associations of communicative skills, social behavior, and personality with acceptance and popularity as a function of hearing status, gender, and educational setting. Participants were 87 deaf and 672 hearing early adolescents of 52 6th grade classrooms in mainstream and special education. Acceptance varied as a function of hearing(More)
Phonological theories of dyslexia assume a specific deficit in representation, storage and recall of phonemes. Various brain imaging techniques, including qEEG, point to the importance of a range of areas, predominantly the left hemispheric temporal areas. This study attempted to reduce reading and spelling deficits in children who are dyslexic by means of(More)
Learning to read is a complex process that develops normally in the majority of children and requires the mapping of graphemes to their corresponding phonemes. Problems with the mapping process nevertheless occur in about 5% of the population and are typically attributed to poor phonological representations, which are--in turn--attributed to underlying(More)