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The licensing of handgun purchasers, background check requirements for all gun sales, and close oversight of retail gun sellers can reduce the diversion of guns to criminals. Reducing the incidence of gun violence will require interventions through multiple systems, including legal, public health, public safety, community, and health. Increasing the availability of data and funding will help inform and evaluate policies designed to reduce gun violence. G un violence is an important national problem leading to more than 31,000 deaths and 78,000 nonfatal injuries every year. Although the rate of gun homicides in the United States has declined in recent years, U.S. rates remain substantially higher than those of almost every other nation in the world and are at least seven times higher than those of Australia, Canada, France, Germany, India, Italy, Japan, South Korea, Spain, Sweden, the United Kingdom, and many others (see Alpers & Wilson, 2013). Guns are not a necessary or sufficient cause of violence and can be used legally for a variety of sanctioned activities. Still, they are an especially lethal weapon used in approximately two thirds of the homicides and more than half of all suicides in the United States. Every day in the United States, approximately 30 persons die of homicides and 53 persons die of suicides committed by someone using a gun (Centers for Disease Control and Prevention [CDC], 2013a). Guns also provide individuals with the capacity to carry out multiple-fatality shootings that inflict great trauma and grief on our society, and the public rightly insists on action to make our communities safer. Every day in the United States, approximately 30 persons die of homicides and 53 persons die of suicides committed by someone using a gun. Gun violence demands special attention. At the federal level, President Barack Obama announced a new “Now Is the Time” plan (White House, 2013) to address firearm violence to better protect children and communities and issued 23 related executive orders to federal agencies. The importance of continued research to address firearm violence is reflected in the 2013 report of the Institute of Medicine (IOM) and the National Research Council (NRC) Priorities for Research to Reduce the Threat of Firearm-Related Violence. This report calls for a public health approach that emphasizes the importance of accurate information on the number and distribution of guns in the United States, including risk factors and motivations for acquisition and use, the association between exposure to media violence and any subsequent perpetration of gun violence, and how new technology can facilitate prevention. The report also outlines a research agenda to facilitate programs and policies that can reduce the occurrence and impact of firearm-related violence in the United States. Psychology can make an important contribution to policies that prevent gun violence.