Theories which belong to the systemic approach are the best known and most relevant contemporary psychological theories dealing with the notion of family, primarily the dynamics of the relationship between its members. According to the systemic approach to family, family functioning cannot be understood as a sum of each member’s individual functioning. A family is a system composed of subsystems’ components: spousal, parental, and sibling. At the same time, it is a part of an environmental suprasystem with which it exchanges energy and information. In order to understand the way in which one family functions it is important to understand the relationships which exist among these subsystems as well as the relationships between the family and its surrounding. Applying the principles of general system theory on the family, it can be said that parts of the family, i.e. its subsystems, are in constant interaction and that individual member’s behaviour, i.e. subsystems, cannot be understood in isolation from the other parts of the system. Family as a system acts through transactional patterns which consist of repeated interactions that establish the pattern of behaviour. According to Minuchin (Minuchin & Fishman, 1981), those patterns complement the family structure that governs the functioning of the family members by drawing their scale of behaviour and alleviating the interaction between them. A family structure capable of dealing with life in general is crucial for reaching the essential goals with regards to supporting individualization and providing a sense of belonging at the same time.