Graphical Models for Causation, and the Identification Problem

David A. Freedman
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David A. Freedman: University of California, Berkeley

Evaluation Review, 2004, vol. 28, issue 4, 267-293

Abstract: This article (which is mainly expository) sets up graphical models for causation, having a bit less than the usual complement of hypothetical counterfactuals. Assuming the invariance of error distributions may be essential for causal inference, but the errors themselves need not be invariant. Graphs can be interpreted using conditional distributions, so thatwe can better address connections between the mathematical framework and causality in the world. The identification problem is posed in terms of conditionals. As will be seen, causal relationships cannot be inferred from a data set by running regressions unless there is substantial prior knowledge about the mechanisms that generated the data. There are fewsuccessful applications of graphicalmodels, mainly because few causal pathways can be excluded on a priori grounds. The invariance conditions themselves remain to be assessed.

Keywords: causation; linear models; graphical models; identification; invariance under intervention (search for similar items in EconPapers)
Date: 2004
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Persistent link: https://EconPapers.repec.org/RePEc:sae:evarev:v:28:y:2004:i:4:p:267-293

DOI: 10.1177/0193841X04266432

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