Peter Jonathan de Villiers

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Theory-of-mind (ToM) abilities were studied in 176 deaf children aged 3 years 11 months to 8 years 3 months who use either American Sign Language (ASL) or oral English, with hearing parents or deaf parents. A battery of tasks tapping understanding of false belief and knowledge state and language skills, ASL or English, was given to each child. There was a(More)
Despite reports of positive effects of high-quality child care, few experimental studies have examined the process of improving low-quality center-based care for toddler-age children. In this article, we report intervention effects on child care teachers' behaviors and children's social, emotional, behavioral, early literacy, language, and math outcomes as(More)
In the internet environment the importance of content has grown. This has brought about a change in emphasis to provide content-based services in addition to traditional Internet transactions and services. The introduction of content-based services is the key to increase revenues. To effectively increase revenues through content-based services efficient(More)
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