Evidential Pluralism provides a new account of how to integrate diverse evidence when evaluating whether a policy works. For an introduction to this approach to evidence-based policy, called ‘EBP+’, see:
- Joe Jones, Alexandra Trofimov, Michael Wilde & Jon Williamson: Integrating diverse evidence using Evidential Pluralism: introductory guide, SSRN:6848683, Doi 10.2139/ssrn.6848683
This can motivate the use of qualitative evidence in policy evaluation. See, e.g.,
- Corrado Matta, Rosa W. Runhardt, Jon Williamson & Dennis Beach: Meta-ethnography and policy effectiveness: an Evidential Pluralism perspective, Synthese 208: 168, 2026. Doi 10.1007/s11229-026-05808-2.
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More broadly, Evidential Pluralism provides a new way of thinking about causal enquiry in the social sciences. For introductions to this approach, see:
- Yafeng Shan and Jon Williamson: Applying Evidential Pluralism to the social sciences, European Journal for the Philosophy of Science 11(4):96, 2021.
- Yafeng Shan and Jon Williamson: Evidential Pluralism in the Social Sciences, Routledge 2023.
Please see the Papers page for more references.
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For more detail see the research projects
- Interdisciplinary Systematic Review: mechanistic evidence and epistemic justice (UKRI, 2025-27)
- Evidential pluralism in the social sciences (Leverhulme Trust 2019-22)
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