Terrorist violence appeals to and pivots on the creation and dissemination of fear. In that respect, it hinges on public perceptions and threat manufacturing to have policy impact. Scholars have long recognized that terrorist actors appeal to multiple audiences, including the public audience. By sowing fear, actors hope that the public will put pressure on the target regime to enact policy concessions to militants or that policymakers, fearing the erosion of public support, will bend to the terrorists’ demands. Recognizing this, it behooves scholars to delineate the mechanisms that shape perceptions and parse the different types of emotional and cognitive responses that terrorist violence arouses. Violence inculcates a range of public responses, most notably, anxiety, fear, anger, and perceptions of threat. These responses may vary with individual demographics, such as gender and age, but are also guided by the political environment in which individuals are embedded. Variegated emotive responses have important policy consequences as distinct emotions are associated with different policy demands. On the whole, psychological reactions to terrorism underlie the effectiveness of terrorism and have downstream social, political, and cultural ramifications.