| Autor: |
Funk MS; Department of Anthropology, Northwestern University, Evanston, Illinois, USA. mdfunk@northwestern.edu |
| Jazyk: |
angličtina |
| Zdroj: |
Animal cognition [Anim Cogn] 2002 Sep; Vol. 5 (3), pp. 167-76. Date of Electronic Publication: 2002 Aug 30. |
| DOI: |
10.1007/s10071-002-0149-4 |
| Abstrakt: |
Despite the long divergent evolutionary history of birds and mammals, early avian and primate cognitive development have many convergent features. Some of these features were investigated with a series of tasks designed to assess human infant development. The tasks were presented to young parakeets to assess their means-end problem solving abilities. Examples of these early skills are: attaining and playing with objects, retrieving rewards through use of a stick or rake, or by pulling in rewards on supports or on the ends of strings. Twelve such tasks were presented to 11 young yellow-crowned parakeets ( Cyanoramphus auriceps) to investigate their natural abilities; there was no attempt to train them to do those tasks that they did not spontaneously perform. Six of the birds were parent-raised and five were hand-raised. The birds completed 9 of the 12 tasks, demonstrating all the Piagetian sensorimotor circular reactions, but they failed to hand-watch ("claw-watch"), to stack objects, or to fill a container. Their ordinality on the tasks differed from that of human infants in that locomotion to obtain objects occurred earlier in the avian sequence of development and the mid-level tasks were performed by the two groups of avian subjects in a mixed order perhaps indicating that these abilities may not emerge in any particular order for these birds as they supposedly do for human infants. The hand-raised group needed fewer sessions to complete these means-end tasks. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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Full text from SpringerLink