The article refers to the results of the empirical research of some peculiarities of prosocial behavior in Mordovian young people, exactly, the normative behavior. It also analyzes the differences of prosocial behavior in young people and adults. Statistically significant differences between the students and adults data has been shown. For young people the sense of pity, compassion, love to the subject have the least ranks in motivation for prosocial behavior, unlike for adults for whom those feelings are the most important. The opposite situation occurs in the case when a selfless act for the benefit of another person helps to increase the self-esteem. For young people this motivation is the most significant while for adults it is of the least importance. The results of empirical research of the interrelation of empathy development level and pro social behaviour of a person are discussed in the article.