EN
The author presents hypotheses concerning evolutionary factors responsible for the evolvement of imagination and its adaptive functions. Pleistocene was pointed as the environment for evolutionary adaptability in which it was possible for imagination to evolve as a result of certain phenomena which occurred at that time and which were important for the evolution of man. These included: creation and use of first tools, emergence of the hunting-gathering society, migration of hominid from Africa to other continents and development of social relations with a special emphasis on cooperation. It has been concluded that these phenomena could have constituted the selection factors which determined the evolution of imagination.