How the Bomb Shapes Leaders: The Psychology of Power and Prevention

Speaker: Caleb Pomeroy
How does possession of nuclear weapons affect decisionmaker psychology? Extensive research documents the causes of proliferation, but we know far less about the psychological consequences of this proliferation. Drawing on advances in psychological research on power, this paper expects that possession of nuclear weapons increases support for preventive war. In contrast to conventional security and prestige arguments, the feeling of power activates a curious combination of fear and overconfidence -- the hallmark features of preventive war thinking. The paper examines this expectation through internal documents in the Truman and Eisenhower Administrations. The findings shed new light on the effects of nuclear weapons on foreign policy in general, as well as the sources of preventive war thinking in particular.