One of the defining social and psychological phenomena of interpersonal relationships characteristic of a developed team. It is the process of linking the individual to the group and its members, So that one imitates and assimilates the actions of the group, its beliefs, norms, goals, etc. This process can foster a sense of collective belonging and collective pride. It is fully expressed in sympathy and complicity, When each member of the group responds emotionally and actively to each other’s successes and failures.