Transformative treatments

L. A. Paul, Kieran Healy

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Contemporary social-scientific research seeks to identify specific causal mechanisms for outcomes of theoretical interest. Experiments that randomize populations to treatment and control conditions are the “gold standard” for causal inference. We identify, describe, and analyze the problem posed by transformative treatments. Such treatments radically change treated individuals in a way that creates a mismatch in populations, but this mismatch is not empirically detectable at the level of counterfactual dependence. In such cases, the identification of causal pathways is underdetermined in a previously unrecognized way. Moreover, if the treatment is indeed transformative it breaks the inferential structure of the experimental design. Transformative treatments are not curiosities or “corner cases,” but are plausible mechanisms in a large class of events of theoretical interest, particularly ones where deliberate randomization is impractical and quasi-experimental designs are sought instead. They cast long-running debates about treatment and selection effects in a new light, and raise new methodological challenges.
Original languageEnglish
Pages (from-to)320-335
Number of pages16
JournalNoûs
Volume52
Issue number2
Early online date7 Nov 2016
DOIs
Publication statusPublished - Jun 2018

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