Terminal Rivalry: A Competitive Elimination Theory of Lethal Violence and Harm Reduction

Abstract This paper proposes a novel theoretical framework for understanding lethal violence: The Competitive Elimination Theory. It posits that many homicides, regardless of surface motive, may be understood as acts of eliminating a rival in a perceived zero-sum competition. Current criminological models tend to categorize homicides by surface motive (domestic, financial, political), obscuring a potential underlying structural similarity: the person who kills may view the victim as an obstacle to a desired resource. This paper introduces the concept of zero-sum thinking as the psychological mechanism that may drive competitive elimination in some cases. It then advances a critical new dimension: harm reduction and prevention strategies derived directly from the theory itself. By examining how potential victims can reduce their risk, how individuals considering violence can be deterred, how zero-sum conflicts can be transformed into positive-sum alliances, and how law enforcement can apply this framework in investigations, threat assessment, and community policing, this paper offers not only an explanatory framework but a practical guide for violence prevention. The paper concludes with a research agenda for testing the theory empirically, including quantitative, qualitative, and experimental methods, along with the ethical considerations that must guide such research. The theory suggests that "motive" may be understood as the arena of competition (economic, relational, status, ideological, and social dynamics), while a potential underlying mechanism may be competitive elimination—and the solution lies in disrupting that mechanism where it exists. The four primary arenas are presented as fundamental, but the framework is intentionally designed for expansion, inviting others to refine, extend, and apply it across contexts. A personal reflection on conflict as a universal human experience grounds the theory in lived understanding. *Keywords: homicide, criminological theory, violence prevention, zero-sum game, harm reduction, conflict transformation, competitive elimination, law enforcement, research methods, research ethics, feminist criminology, social dynamics, group pressure, social media