Descriptor
| Cognitive Development | 1 |
| Conservation (Concept) | 1 |
| Development | 1 |
| Perception | 1 |
| Perceptual Development | 1 |
| Psychology | 1 |
| Space Orientation | 1 |
Source
| Merrill-Palmer Quarterly | 1 |
Author
| Abravanel, Eugene | 1 |
| Larsen, Gary Y. | 1 |
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Peer reviewedLarsen, Gary Y.; Abravanel, Eugene – Merrill-Palmer Quarterly, 1972
The conservation of distance and of length and the awareness of the horizontal and of the vertical do seem to significantly precede the measurement of length, but the results did not indicate that these four tasks have any developmental order among themselves. Bibliography, charts. (Author)
Descriptors: Cognitive Development, Conservation (Concept), Development, Perception
