Maliukova I V, Molotova N G
Zh Evol Biokhim Fiziol. 1994 Mar-Apr;30(2):238-48.
The study of cognitive activity in four 4-6-year-old chimpanzees was carried out during visual their discriminating and summarizing of signals (pictures of natural objects and volume figures). It was established that apes were able to compare the signals according to their size. Chimpanzees were successful in transferring their experience from one image type to another. The data obtained proof that apes were able to summarize, operate with abstract ideas and think logically.
对四只4至6岁黑猩猩的认知活动进行了研究，研究过程包括它们对信号（自然物体图片和立体图形）的视觉辨别和总结。结果发现，猿类能够根据信号大小进行比较。黑猩猩能够成功地将其经验从一种图像类型转移到另一种图像类型。所获得的数据证明，猿类能够进行总结、运用抽象概念并进行逻辑思考。
