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Critical juncture theory

Theory of large, discontinuous changes

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Through Causality, Explanation and Social order

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.

Origins in the 1960s and early 1970s

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.

Kuhn's paradigm shifts

Philosopher of science Thomas Kuhn's landmark work The Structure of Scientific Revolutions (1962) introduced and popularized the idea of discontinuous change and the long-term effects of discontinuous change. Kuhn argued that progress in knowledge occurs at times through sudden jumps, which he called paradigm shifts. After paradigm shifts, scholars do normal science within paradigms, which endure until a new revolution came about.

Kuhn challenged the conventional view in the philosophy of science at the time that knowledge growth could be understood entirely as a process of gradual, cumulative growth. Stephen Jay Gould writes that "Thomas Kuhn’s theory of scientific revolutions" was "the most overt and influential" scholarly work to make a "general critique of gradualism" in the twentieth century.

Gellner's neo-episodic model of change

Anthropologist Ernest Gellner proposed a neo-episodic model of change in 1964 that highlights the "step-like nature of history" and the "remarkable discontinuity" between different historical periods. Gellner contrasts the neo-episodic model of change to an evolutionary model that portrays "the pattern of Western history" as a process of "continuous and sustained and mainly endogenous upward growth."

Sociologist Michael Mann adapted Gellner's idea of "'episodes' of major structural transformation" and called such episodes "power jumps."

Lipset and Rokkan's critical junctures

Sociologist Seymour Lipset and political scientist Stein Rokkan introduced the idea of critical junctures and their long-term impact in the social sciences in 1967. The ideas presented in the coauthored 1967 work were elaborated by Rokkan in Citizens, Elections, and Parties (1970).

Gellner had introduced a similar idea in the social sciences. However, Lipset and Rokkan offered a more elaborate model and an extensive application of their model to Europe (see below). Although Gellner influenced some sociologists, the impact of Lipset and Rokkan on the social sciences was greater.

Gould's punctuated equilibrium model

Kuhn's ideas influenced paleontologist Stephen Jay Gould, who introduced the idea of punctuated equilibrium in the field of evolutionary biology in 1972. Gould's initial work on punctuated equilibrium was coauthored with Niles Eldredge.

Gould's model of punctuated equilibrium drew attention to episodic bursts of evolutionary change followed by periods of morphological stability. He challenged the conventional model of gradual, continuous change - called phyletic gradualism.

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