There are many influential social factors which influence teenagers personality formation, but today the most important personality socialization factors is a group of contemporaries. Repudiation is connected with undesirable behavior consequences. One of the most important personality socialization factors is a group of contemporaries. Repudiation is connected with undesirable behaviour consequences. Most often repudiation from contemporaries groups reveals in teens and becomes apparent in disability to accommodate with contemporaries behavior’ culture. The index of dependence difficulties in contemporaries groups are getting into conflicts, aggressive behavior, unnature behavior forms and low self esteem. The review of scientific literature and researches in Lithuania has showed that peculiarities of contemporary groups and repudiation factors has been rarely analysed in the sociological studies. The social workers lack experience and complex model to help teenagers in this problem. The aim of this work was set to reveal the specific features of contemporary groups, the factors of repudiation from these groups and foresees the intensity of social assistance.