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| Concept Formation | 3 |
| Perceptual Development | 3 |
| Visual Impairments | 3 |
| Blindness | 2 |
| Age Differences | 1 |
| Children | 1 |
| Cognitive Development | 1 |
| Conservation (Concept) | 1 |
| Developmental Stages | 1 |
| Exceptional Child Research | 1 |
| Object Permanence | 1 |
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Peer reviewedTobin, M. J. – British Journal of Educational Psychology, 1972
On the basis of a conservation of substance experiment with 189 blind and partially sighted children, it is inferred that while the best of them are performing on a par with the best of their sighted peers, the age range in which conservation is attained is more extended for the visually handicapped. (Author)
Descriptors: Age Differences, Children, Concept Formation, Conservation (Concept)
Hanninen, Kenneth A. – Except Children, 1970
Descriptors: Blindness, Concept Formation, Exceptional Child Research, Perceptual Development
Peer reviewedRogers, S. J.; Puchalski, C. B. – Journal of Visual Impairment and Blindness, 1988
Development of object permanence skills was examined longitudinally in 20 visually impaired infants (ages 4-25 months). Order of skill acquisition and span of time required to master skills paralleled that of sighted infants, but the visually impaired subjects were 8-12 months older than sighted counterparts when similar skills were acquired.…
Descriptors: Blindness, Cognitive Development, Concept Formation, Developmental Stages
