[The characteristics of the forms of perceptive and cognitive activities in adolescent chimpanzees]

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.