The discrimination of discrete and continuous amounts in African grey parrots (Psittacus erithacus)
The discrimination of discrete and continuous amounts in African grey parrots (Psittacus erithacus)
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DOI：
10.1007/s10071-008-0178-8
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发表时间：
2009-01-01
期刊：
影响因子：
2.7
通讯作者：
Bovet, Dalila
中科院分区：
文献类型：
--
作者：
Al Ain, Syrina;Giret, Nicolas;Bovet, Dalila
对婴儿和动物进行的大量研究表明，婴儿和动物对数量的辨别能力，在某些情况下，非语言的数字感知能力，甚至是基本的计算能力。我们研究了三只非洲灰鹦鹉（Psittacus erithacus）在两组食物之间选择最大数量食物的能力，无论是离散的食物（实验1）还是食物物质的体积（实验2）。这两个金额同时呈列，并在选择时可见。对鹦鹉进行多次试验，以获得1至5粒种子或0.2至1 ml食物物质之间的所有可能组合。在这两种情况下，受试者几乎在所有组合中的表现都高于机会。准确度与比率呈负相关，即性能随着量之间的差异而提高。因此，这些结果与个别项目和体积歧视表明，鹦鹉使用的模拟量，而不是对象文件机制，以量化项目和物质。
A wealth of research in infants and animals demonstrates discrimination of quantities, in some cases nonverbal numerical perception, and even elementary calculation capacities. We investigated the ability of three African grey parrots (Psittacus erithacus) to select the largest amount of food between two sets, either discrete food items (experiment 1) or as volume of a food substance (experiment 2). The two amounts were presented simultaneously and were visible at the time of choice. Parrots were tested several times for all possible combinations between 1 and 5 seeds or 0.2 and 1 ml of food substance. In both conditions, subjects performed above chance for almost all combinations. Accuracy was negatively correlated with the ratio, that is performance improved with greater differences between amounts. Therefore, these results with both individual items and volume discrimination suggest that parrots use an analogue of magnitude, rather than object-file mechanisms to quantify items and substances.