A Dialogue with the Data: the Bayesian foundations of iterative research in qualitative social science

Tasha Fairfield and Andrew Charman

LSE Research Online Documents on Economics from London School of Economics and Political Science, LSE Library

Abstract: We advance efforts to explicate and improve inference in qualitative research that iterates between theory development, data collection, and data analysis, rather than proceeding linearly from hypothesizing to testing. We draw on the school of Bayesian “probability as extended logic,” where probabilities represent rational degrees of belief in propositions given limited information, to provide a solid foundation for iterative research that has been lacking in the qualitative methods literature. We argue that mechanisms for distinguishing exploratory from confirmatory stages of analysis that have been suggested in the context of APSA’s DA-RT transparency initiative are unnecessary for qualitative research that is guided by logical Bayesianism, because new evidence has no special status relative to old evidence for testing hypotheses within this inferential framework. Bayesian probability not only fits naturally with how we intuitively move back and forth between theory and data, but also provides a framework for rational reasoning that mitigates confirmation bias and ad-hoc hypothesizing—two common problems associated with iterative research. Moreover, logical Bayesianism facilitates scrutiny of findings by the academic community for signs of sloppy or motivated reasoning. We illustrate these points with an application to recent research on state building.

JEL-codes: C1 (search for similar items in EconPapers)
Date: 2019-03-01
New Economics Papers: this item is included in nep-hpe
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Citations: View citations in EconPapers (3)

Published in Perspectives on Politics, 1, March, 2019, 17(1), pp. 154-167. ISSN: 1537-5927

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