Structures and transformations: Heuristics of economic change.

The article identifies foundational principles of the structural analysis of economic, political and social systems, and explores their bearing on the study of structural transformations. In doing so, it delves especially into the conceptual resources provided by strands of economic theory. Particular importance is given to the relative positions of socio-economic groups, productive sectors, and institutions; the relative invariance of certain patterns of interdependence vis-à-vis others; and the view of economic dynamics as structural transformation subject to the condition of relative invariance. The article goes on to introduce and discuss a collection of papers that explore the relationship between structures and transformations in economic, political and social systems. A fundamental theme is the relationship between the range of transformations made possible by structures and the individual or collective actions taking place within those structures, which lead to some structural transformations instead of others. [ABSTRACT FROM AUTHOR]