This paper is devoted to psychological issues resulting from virtual environment use. Phenomena of presence and immersion in/to virtual environments are a subject of psychology studies, at the same time they are extremely important from positions of computer visualization. The goal of our research is to identify factors affecting users' abilities to interpret computer visualization in virtual environments. The experiment based on Kohs Block Design Test was designed and conducted. The influence of this phenomenon on a user's performance is considered.Ключевые слова: Presence, virtual reality, visualization.