The perspective that VPA promotes revolves around three theoretical models: the typology of violence, the public health approach and the ecological framework. These models guide understanding, research and action for violence prevention. The typology is a tool to help organize thinking about the types of violence and the ways in which violence occurs. The public health approach offers practitioners, policy-makers and researchers a step-wise guide that can be applied to planning programmes, policies, and investigation. Finally, the ecological framework bridges these two models, giving a structure to understanding the contexts within which violence occurs and the interactions between risk factors in each of these contexts and between them. The ecological framework shows where and how to apply the public health approach and is useful for categorizing planned or existing interventions to help understand the mechanisms by which they might be working.
