OBJECTIVE We have previously shown that racial composition of behavioral intervention groups does not affect achieved weight loss. However, it is unclear if the race of the interventionist affects intervention outcomes. The objective of this analysis is to estimate the impact of race concordance between participant and interventionist on weight change in the initial weight loss phase (phase I) ...

We argue that Koch's postulates are best understood within an interventionist account of causation, in the sense described in Woodward (2003). We show how this treatment helps to resolve interpretive puzzles associated with Koch's work and how it clarifies the different roles the postulates play in providing useful, yet not universal criteria for disease causation. Our paper is an effort at rat...

OBJECTIVE To compare outcomes associated with expectant vs. interventionist care of severe preeclampsia in observational studies. DATA SOURCES Medline (01/1980-07/2007), bibliographies of retrieved papers, personal files, Cochrane Database of Systematic Reviews. STUDY SELECTION Expectant or interventionist care of preeclampsia at <34 wk. TABULATION, INTEGRATION, RESULTS: Data abstraction in...

Woodward’s interventionist theory of causation is beset by a problem of circularity: the analysis of causes is in terms of interventions, and the analysis of interventions is in terms of causes. This is not in itself an argument against the correctness of the analysis. But by requiring us to have causal knowledge prior to making any judgements about causation, Woodward’s theory does make it mys...

Intervention theories of causality define a relationship as causal if appropriately specified interventions to manipulate a putative cause tend to produce changes in the putative effect. Interventionist causal theories are commonly formalized by using directed graphs to represent causal relationships, local probability models to quantify the relationship between cause and effect, and a special ...

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We analyzed a group of patients with the diagnosis of internal carotid aneurysms in its intracavernous segment, with emphasis in prevalence, clinical features, treatments, evolution and neurological prognosis. Neurological signs and symptoms at initial presentation were registered and compared with final outcome. Patients were divided into two stratified groups, one with 19 patients which under...

According to James Woodward's influential interventionist account of causation, X is a cause of Y iff, roughly, there is a possible intervention on X that changes Y. Woodward requires that interventions be merely logically possible. I will argue for two claims against this modal character of interventions: First, merely logically possible interventions are dispensable for the semantic project o...

The first part of this paper presents an argument showing that the currently most highly acclaimed interventionist theory of causation, i.e. the one advanced by Woodward, excludes supervening macro properties from having a causal influence on effects of their micro supervenience bases. Moreover, this interventionist exclusion argument is demonstrated to rest on weaker premises than classical ex...