Openness to experience is one of the psychological properties described in the personcentered approach as the ability to encounter new experience, accept it, live it and incorporate it into the structure of the “Self”. In the future, the task is to discover ways to objectively determine openness to experience. Within the framework of this work, the goal is to test whether psychologists can use standardized examples (stimulus material) to determine the degree of openness to experience in a person. The materials of the experiment were 22 video recordings of structured interviews, the experts were 6 consulting psychologists. As a result of the experiment, it was possible to establish that expert psychologists can determine openness to experience with a sufficient degree of consistency.