Relative numerousness judgment and summation in young and old Western lowland gorillas
Relative numerousness judgment and summation in young and old Western lowland gorillas
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DOI：
10.1037/0735-7036.119.3.285
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发表时间：
2005-08-01
影响因子：
1.4
通讯作者：
Maple, TL
中科院分区：
文献类型：
--
作者：
Anderson, US;Stoinski, TS;Maple, TL
研究了11只西部低地大猩猩的年龄、相对数量判断和总和之间的关系。实验1和2评估了大猩猩在训练前和训练后选择两种食物中较大者的能力。大多数大猩猩没有可靠地选择较大的数量在实验I中，直到接受训练，这样做在实验2中。实验3评估了他们选择2对数量中较大者的能力。所有的大猩猩都选择较大的一对，而不是随机选择，年长的大猩猩比年轻的大猩猩更不准确，也更慢。对于大多数大猩猩来说，在训练和求和的相对数量判断中的表现与以前在黑猩猩和猩猩中的报道相当。
The relationship between age, relative numerousness judgment, and summation was investigated in 11 Western lowland gorillas (Gorilla gorilla gorilla). Experiments 1 and 2 evaluated the gorillas' ability to select the larger of 2 food quantities before and with training. The majority of gorillas did not reliably select the larger quantity in Experiment I until receiving training to do so in Experiment 2. Experiment 3 evaluated their ability to select the larger of 2 pairs of quantities. All gorillas selected the larger pair more often than chance, and the old were less accurate and slower than were the young. For most gorillas, performance in relative numerousness judgment with training and summation was comparable with previous reports in chimpanzees and orangutans.