In the decades following World War II, the science of decision-making moved from the periphery to the center of transatlantic thought. The Decisionist Imagination explores how "decisionism" emerged from its origins in prewar political theory to become an object of intense social scientific inquiry in the new intellectual and institutional landscapes of the postwar era. By bringing together scholars from a wide variety of disciplines, this volume illuminates how theories of decision shaped numerous techno-scientific aspects of modern governance-helping to explain, in short, how we arrived at where we are today.