Studies of aggressive behavior of teenagers and sexual aggression in particular in the last time are particularly relevant and valuable in modern society. This is confirmed by the data of criminological statistics, according to which the rate of minor crime in the Russian Federation in recent years has virtually the same range. A comprehensive study of the person of a minor convicted of violent crimes of a sexual nature (personal characteristics, characteristics of sexual identity and parent-child relationship) on the basis of comparative analysis with a group of teenagers convicted of the crime of mercenary-violent type, and a group of students emerging in socially favourable environment, enabled them to identify some distinctive features. The obtained results allow to suggest a possible mutual influence of personal characteristics and characteristics of sexual identity with the peculiarities of child-parent relationships in a group of juveniles convicted for violent crimes of a sexual nature.