Abstract
Against the structurally stable equilibrium hypothesis of new classical macroeconomics, econometric research on regime shifts was once stimulated by disequilibrium theory. Regulation theory has mobilized these techniques to show how institutionalized compromises are at the origin of possible macroeconomic regularities, which may or may not have repercussions on the accumulation regime. The chapter reviews the various techniques available and discusses their relevance, then presents the main results thus obtained. They express the synergy between an institutionalist and historical approach and the econometrics of regime change. The period of intense structural transformations, evident in the 2020s, calls for a relaunch of this research program.