Advisory practice also relies on the achievement of developmental psychology, science uses the extracted facts and laws. Viewpoint of a psychologist-consultant on the data of developmental psychology is based primarily on the fact that the object of his analysis are the various forms of dysfunctional development and its causes. This view is further defined by two practical problems: detect trouble and its causes in a given case and to identify and then implement psychological interventions in the course of this development affect any cause or adverse conditions. Psychology of Child Development shows that the factors influencing the formation of the child's mind, in one case is promoted, and in another hamper the optimal development of the child. Identification of factors, mainly contributed to the occurrence of violations of child development in a particular case and determines the choice of one of three fundamental strategies of psychotherapeutic counseling:

1) focus on parents, their relationship to the child, their personality traits and motives,

2) focus on most child and his domestic problems,

3) focus on the relationship of parents and children, and their interaction.

Allocation of these three possible causes and strategies that, for the individual-oriented model of psychotherapy psychological assistance to the most interesting of the objective determinants of mental development are those that are somehow connected with their parents, their influence on the child.