This paper reviews concepts, principles and tools that have led to a coherent mathematical theory of causation based on structural models. The theory provides solutions to a number of problems in causal inference, including questions of confounding control, policy analysis, mediation, missing...

Structural equation models (SEMs) have dominated causal analysis in the social and behavioral sciences since the 1960s. Currently, many SEM practitioners are having difficulty articulating the causal content of SEM and are seeking foundational answers. Recent developments in the areas of...