Quarrels are a regular phenomenon in family life. It can be assumed that family-centred experiences are at the basis of the child’s development. Therefore, the analysis of the consequences of parental quarrels on the child is of fundamental importance. The effects of parental quarrel behaviours on the child’s condition have been widely researched since the 1980’s. The focus of this research work has predominantly been on the negative consequences of these behaviours, however the positive effects have also been observed and discussed. This includes particularly the finding that parental quarrels can lead to teenager’s maladjustment, which in turn results in negative effects on social, cognitive, educational and psycho-biological functions and also many positive effects.