This article reports on a pilot study, conducted by the Visually Impaired Infants Research Consortium, of 21 developmental milestones achieved by 82 visually impaired children in New York City. Some delays in visual-motor activities were found, as well as differences in the sequence of acquiring skills. The subgroup of visually impaired children with multiple handicaps acquired milestones at a slower rate than did the subgroup of visually impaired children with no additional handicapping conditions.
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Ferrell et al. (1990) studied this question.
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