Na početku ovog rada agresivnost se definira na nekoliko načina. Nakon određivanja agresivnosti kao pojma prikazuje se pregled nekih od teorija agresivnosti, poput instinktivističke, situacijske, kognitivne, biološke i fiziološke teorije te teorije naučenog ponašanja. Na pojavu agresivne reakcije utječu broji faktori, a veća pozornost u radu se pridaje emocionalno-motivirajućem, kognitivno informacijskom, socijalnom i situacijskom faktoru te obiteljskim prilikama. Nakon toga, u radu se navode i objašnjavaju vrste agresivnosti. Nakon definiranja pojma agresivnosti, prikazivanja teorija koje objašnjavaju agresivno ponašanje, faktora koji djeluju na pojavu agresivnog ponašanja te vrsta agresivnosti, definira se pojam nasilja te kako je ono povezano s agresivnošću mladih. Na kraju ovog rada, definira se pojam maloljetničke delinkvencije te delikta nasilja, kao ponašanja koje je karakteristično za maloljetnike.

At the beginning of this article, aggressiveness is defined in a several ways. After the definition of aggression, the concept displays an overview some of the theories of aggression, such as instinctive, situational, cognitive, biological and physiological theories, and theory of learned behavior. Aggressive reactions are influenced by several factors, and more attention is paid to the emotional-motivating, cognitive, social, and situational factors and family circumstances. Afterwards, the paper describes and explains the types of aggression. By defining the notion of aggressiveness of the presentation of theories that explain aggressive behavior, factors affecting the appearance of aggressive behavior and the type of aggression, defines the notion of violence and how it is related to the aggressiveness of the youth. In the end of this paper, defined the term of juvenile delinquency and the delinquency of violence delict, which is defined as a behavior characteristic of juveniles.