Commentary: Practical implications of theoretical results for causal mediation analysis

Mediation analysis has been extensively applied in psychological and other social science research. A number of methodologists have recently developed a formal theoretical framework for mediation analysis from a modern causal inference perspective. In Imai, Keele, and Tingley (2010), we have offered...

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Main Authors: Imai, Kosuke, Keele, Luke, Tingley, Dustin, Yamamoto, Teppei
Other Authors: Massachusetts Institute of Technology. Department of Political Science
Format: Article
Language:en_US
Published: American Psychological Association (APA) 2015
Online Access:http://hdl.handle.net/1721.1/99740
https://orcid.org/0000-0002-8079-7675
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author Imai, Kosuke
Keele, Luke
Tingley, Dustin
Yamamoto, Teppei
author2 Massachusetts Institute of Technology. Department of Political Science
author_facet Massachusetts Institute of Technology. Department of Political Science
Imai, Kosuke
Keele, Luke
Tingley, Dustin
Yamamoto, Teppei
author_sort Imai, Kosuke
collection MIT
description Mediation analysis has been extensively applied in psychological and other social science research. A number of methodologists have recently developed a formal theoretical framework for mediation analysis from a modern causal inference perspective. In Imai, Keele, and Tingley (2010), we have offered such an approach to causal mediation analysis that formalizes identification, estimation, and sensitivity analysis in a single framework. This approach has been used by a number of substantive researchers, and in subsequent work we have also further extended it to more complex settings and developed new research designs. In an insightful article, Pearl (2014) proposed an alternative approach that is based on a set of assumptions weaker than ours. In this comment, we demonstrate that the theoretical differences between our identification assumptions and his alternative conditions are likely to be of little practical relevance in the substantive research settings faced by most psychologists and other social scientists. We also show that our proposed estimation algorithms can be easily applied in the situations discussed in Pearl (2014). The methods discussed in this comment and many more are implemented via mediation, an open-source software (Tingley, Yamamoto, Hirose, Keele, & Imai, 2013).
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spelling mit-1721.1/997402022-09-30T18:27:54Z Commentary: Practical implications of theoretical results for causal mediation analysis Comment on Pearl: Practical implications of theoretical results for causal mediation analysis Imai, Kosuke Keele, Luke Tingley, Dustin Yamamoto, Teppei Massachusetts Institute of Technology. Department of Political Science Yamamoto, Teppei Yamamoto, Teppei Mediation analysis has been extensively applied in psychological and other social science research. A number of methodologists have recently developed a formal theoretical framework for mediation analysis from a modern causal inference perspective. In Imai, Keele, and Tingley (2010), we have offered such an approach to causal mediation analysis that formalizes identification, estimation, and sensitivity analysis in a single framework. This approach has been used by a number of substantive researchers, and in subsequent work we have also further extended it to more complex settings and developed new research designs. In an insightful article, Pearl (2014) proposed an alternative approach that is based on a set of assumptions weaker than ours. In this comment, we demonstrate that the theoretical differences between our identification assumptions and his alternative conditions are likely to be of little practical relevance in the substantive research settings faced by most psychologists and other social scientists. We also show that our proposed estimation algorithms can be easily applied in the situations discussed in Pearl (2014). The methods discussed in this comment and many more are implemented via mediation, an open-source software (Tingley, Yamamoto, Hirose, Keele, & Imai, 2013). 2015-11-09T12:39:07Z 2015-11-09T12:39:07Z 2014-12 Article http://purl.org/eprint/type/JournalArticle 1939-1463 1082-989X http://hdl.handle.net/1721.1/99740 Imai, Kosuke, Luke Keele, Dustin Tingley, and Teppei Yamamoto. “Comment on Pearl: Practical Implications of Theoretical Results for Causal Mediation Analysis.” Psychological Methods 19, no. 4 (2014): 482–487. https://orcid.org/0000-0002-8079-7675 en_US http://dx.doi.org/10.1037/met0000021 Psychological Methods Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf American Psychological Association (APA) Yamamoto
spellingShingle Imai, Kosuke
Keele, Luke
Tingley, Dustin
Yamamoto, Teppei
Commentary: Practical implications of theoretical results for causal mediation analysis
title Commentary: Practical implications of theoretical results for causal mediation analysis
title_full Commentary: Practical implications of theoretical results for causal mediation analysis
title_fullStr Commentary: Practical implications of theoretical results for causal mediation analysis
title_full_unstemmed Commentary: Practical implications of theoretical results for causal mediation analysis
title_short Commentary: Practical implications of theoretical results for causal mediation analysis
title_sort commentary practical implications of theoretical results for causal mediation analysis
url http://hdl.handle.net/1721.1/99740
https://orcid.org/0000-0002-8079-7675
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