Comparative cognitive studies on short-term memory in mandrill monkeys

关于人造猴的认知研究还很少。在这项研究中，我在京都市立动物园的人工驯养训练中训练了使用触摸屏监视器。这些实验是向动物园的参观者开放的，是为了“展示智力”。参与者是两个成年人和三个青少年。我们训练用逐次逼近的方法触摸监视器，但幼年山竹通过观察学习自发地开始触摸监视器上的刺激。这一过程类似于黑猩猩幼崽的“师徒教育”。曼陀罗学习了阿拉伯数字的序列。在掌握了序列后，对幼年山竹进行了工作记忆测试，测试结果为：掩蔽序列测试。他们的表现在第二个项目上没有改变，尽管以下项目在触摸第一个项目后被遮盖。结果表明，前两个项目中有一大部分。也进行了视觉偏好测试，但没有明确的结果。

There has still been few cognitive studies in mandrill monkeys (Mandrillus sphinx). In this study, I trained to use a touchscreen monitor in captive mandrills in Kyoto City Zoo. The experiments were conducted open to zoo visitors for "exhibition of intelligence". The participants were two adults and three juveniles. We trained to touch the monitor by successive approximation, but juvenile mandrills spontaneously started to touch stimuli on the monitor by observational learning. This processes were similar to those in chimpanzee infants called "education by master-apprenticeship". The mandrills learned sequence of Arabic numerals. After they mastered the sequence, the juvenile mandrills were tested working memory in "masked sequence test". Their performance did not changed at the second item although the following items were masked after touching the first item. The results suggest a chunk of the first two items. Visual preference test was also conducted, but showed no clear results.