Factor analyses have justified the connection of the risk factors and the protection factors into two collective indexes of risk and protection. Regression analyses (multiple and factorial) made it possible to confront both the models (risk compensation and risk reduction) with the data from the sample. The research has not provided a basis for the verification of the correctness of any of the models mentioned above. The risk compensation model has not been confirmed because the protective factors have not presented themselves as predictive in relation to the readiness to engage in behavioural aggression. The risk reduction model has not been confirmed, because the high value of protective factors has not led to a decrease in the readiness to engage in aggression in individuals with a high value of the risk index. The image of the significant interactive relationship was more complex – it has been presented that a high protective index leads to an extremely low willingness to aggression in individuals with a low risk index of aggression and an extremely high willingness to aggression in individuals with a high value of the aggression risk index. High functionality of the family of origin does not exclude propensity for aggression, and in certain circumstances in the form of high intensity of individualaggressive predispositions it may even increase the risk, which can constitute a significant problem from the perspective of prevention and an incentive to seek specific solutions in this matter.