Critical juncture theory

Critical juncture theory focuses on critical junctures, i.e., large, rapid, discontinuous changes, and the long-term causal effect or historical legacy of these changes. Critical junctures are turning points that alter the course of evolution of some entity (e.g., a species, a society). Critical juncture theory seeks to explain both (1) the historical origin and maintenance of social order, and (2) the occurrence of social change through sudden, big leaps. Critical juncture theory is not a general theory of social order and change. It emphasizes one kind of cause (involving a big, discontinuous change) and kind of effect (a persistent effect). Yet, it challenges some common assumptions in many approaches and theories in the social sciences. The idea that some changes are discontinuous sets it up as an alternative to (1) "continuist" or "synechist" theories that assume that change is always gradual or that natura non facit saltus – Latin for "nature does not make jumps." The idea that such discontinuous changes have a long-term impact stands in counterposition to (2) "presentist" explanations that only consider the possible causal effect of temporally proximate factors. Theorizing about critical junctures began in the social sciences in the 1960s. Since then, it has been central to a body of research in the social sciences that is historically informed. Research on critical junctures in the social sciences is part of the broader tradition of comparative historical analysis and historical institutionalism. It is a tradition that spans political science, sociology and economics. Within economics, it shares an interest in historically oriented research with the new economic history or cliometrics. Research on critical junctures is also part of the broader "historical turn" in the social sciences. The idea of episodes of discontinuous change, followed by periods of relative stability, was introduced in various fields of knowledge in the 1960s and early 1970s.