•the psychodynamic concept ofcatharsis, and views aggression as apsychological driveakin to biological drives such as hunger or thirst.•If our attempt to achieve a goal isblocked by some external factor, we experiencefrustration.•This creates anaggressive drive, which leads toaggressive behaviour, such as violent fantasy, a verbal outburst or perhaps even physical violence.•This iscatharticbecause the aggression created by the frustration is satisfied, therebyreducing the driveand making further aggression less likely – we feel better for having gotten it ‘off our chest’.