Abstract
As one of the Government's responses to the massacre at Port Arthur in 1996, an Expert Working Party was asked by the Federal Government to examine current evidence and determine whether causal links exist between aggressive and self-harmful behaviour on the one hand and a range of health, social and legal factors on the other. This report reviews available information and identifies: areas in which policy responses are feasible (including issues related to firearms legislation); policy options; gaps in existing knowledge; and topics for future research.