an evaluation system that is used by an individual to classify various objects of his living space. The term proposed in the psychology of personality by J. Kelly, to denote cognitive patterns that a person creates himself, and then tries to fit them to the realities that make up this world. Constructs are used to predict recurring events. A construct allows an individual not only to explain someone else’s behavior, but also to project his own, since it sets the actual program of such behavior, an idea or thought that a person uses to realize or interpret, explain or predict his experience in terms of similarity and contrast (for example, “good-bad”). The personality of an individual is an organized system of more or less important constructs. Personal constructs that do not carry a personal meaning for the individual or have not yet become a habit (“peripheral constructs”) are easily amenable to change. Personally significant and long-established (“central constructs”, in J. Kelly’s terminology) change more slowly and more difficultly.