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This article describes new developmental age levels and some psychometric properties for the Reynell-Zinkin scales for young children with visual impairments. Besides the standard error of measurement, psychometric properties are available on item variation, scale reproducibility, and internal consistency. The usefulness of age levels of the Reynell-Zinkin scales is discussed in relation to the aim of the scales, which is to have guidelines for assessment and developmental advice.
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Vervloed et al. (2000) studied this question.
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