Numerical Rule-Learning in Ring-Tailed Lemurs (Lemur catta)
We investigated numerical discrimination and numerical rule-learning in ring-tailed lemurs (Lemur catta). Two ring-tailed lemurs were trained to respond to two visual arrays, each of which contained between one and four elements, in numerically ascending order. In Experiment 1, lemurs were trained...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2011-03-01
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| Series: | Frontiers in Psychology |
| Subjects: | |
| Online Access: | http://journal.frontiersin.org/Journal/10.3389/fpsyg.2011.00023/full |
| _version_ | 1818827631957639168 |
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| author | Dustin eMerritt Evan eMacLean Jeremy Chase Crawford Elizabeth M Brannon |
| author_facet | Dustin eMerritt Evan eMacLean Jeremy Chase Crawford Elizabeth M Brannon |
| author_sort | Dustin eMerritt |
| collection | DOAJ |
| description | We investigated numerical discrimination and numerical rule-learning in ring-tailed lemurs (Lemur catta). Two ring-tailed lemurs were trained to respond to two visual arrays, each of which contained between one and four elements, in numerically ascending order. In Experiment 1, lemurs were trained with 36 exemplars of each of the numerosities 1-4 and then showed positive transfer to trial-unique novel exemplars of the values 1-4. In Experiments 2A and 2B, lemurs were tested on their ability to transfer an ascending numerical rule from the values 1-4 to novel values 5-9. Both lemurs successfully ordered the novel values with above chance accuracy. Accuracy was modulated by the ratio between the two numerical values suggesting that lemurs accessed the approximate number system when performing the task. |
| first_indexed | 2024-12-19T00:46:38Z |
| format | Article |
| id | doaj.art-c756ffede8e445ea97a3c0b552817674 |
| institution | Directory Open Access Journal |
| issn | 1664-1078 |
| language | English |
| last_indexed | 2024-12-19T00:46:38Z |
| publishDate | 2011-03-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Psychology |
| spelling | doaj.art-c756ffede8e445ea97a3c0b5528176742022-12-21T20:44:14ZengFrontiers Media S.A.Frontiers in Psychology1664-10782011-03-01210.3389/fpsyg.2011.000238493Numerical Rule-Learning in Ring-Tailed Lemurs (Lemur catta)Dustin eMerritt0Evan eMacLean1Jeremy Chase Crawford2Elizabeth M Brannon3Duke UniversityDuke UniversityUniversity of California, BerkeleyDuke UniversityWe investigated numerical discrimination and numerical rule-learning in ring-tailed lemurs (Lemur catta). Two ring-tailed lemurs were trained to respond to two visual arrays, each of which contained between one and four elements, in numerically ascending order. In Experiment 1, lemurs were trained with 36 exemplars of each of the numerosities 1-4 and then showed positive transfer to trial-unique novel exemplars of the values 1-4. In Experiments 2A and 2B, lemurs were tested on their ability to transfer an ascending numerical rule from the values 1-4 to novel values 5-9. Both lemurs successfully ordered the novel values with above chance accuracy. Accuracy was modulated by the ratio between the two numerical values suggesting that lemurs accessed the approximate number system when performing the task.http://journal.frontiersin.org/Journal/10.3389/fpsyg.2011.00023/fullNumerical cognitiondistance effectsordinal ruleratio effects |
| spellingShingle | Dustin eMerritt Evan eMacLean Jeremy Chase Crawford Elizabeth M Brannon Numerical Rule-Learning in Ring-Tailed Lemurs (Lemur catta) Frontiers in Psychology Numerical cognition distance effects ordinal rule ratio effects |
| title | Numerical Rule-Learning in Ring-Tailed Lemurs (Lemur catta) |
| title_full | Numerical Rule-Learning in Ring-Tailed Lemurs (Lemur catta) |
| title_fullStr | Numerical Rule-Learning in Ring-Tailed Lemurs (Lemur catta) |
| title_full_unstemmed | Numerical Rule-Learning in Ring-Tailed Lemurs (Lemur catta) |
| title_short | Numerical Rule-Learning in Ring-Tailed Lemurs (Lemur catta) |
| title_sort | numerical rule learning in ring tailed lemurs lemur catta |
| topic | Numerical cognition distance effects ordinal rule ratio effects |
| url | http://journal.frontiersin.org/Journal/10.3389/fpsyg.2011.00023/full |
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