The multiple risk theory has the merit of pointing in new directions as far as early prevention of violence is concerned, for as the University of Minnesota researchers remarked, “reducing any one risk is important”. Thus by lowering, even slightly, the impact of multidimensional difficulties, the child's capacity for resilience can be stimulated (Rutter, 1990). Any intervention would thus take place before psychological disturbances had mutated into selectivity and potentially violent behaviour (Negrao et al., 2008).