Unpacking black boxes: mechanisms and theory building in evaluation
Abstract
There is growing interest in the concept of ‘‘mechanism’’ across many areas of the social sciences. In the field of program and policy evaluation, a number of scholars have also emphasized the importance of causal mechanisms for explaining how and why programs work. However, there appears to be some ambiguity about the meaning and uses of mechanism-based thinking in both the social science and evaluation literature. In this article we attempt to clarify what is meant by mechanisms in the context of program evaluation by identifying three main characteristics of mechanisms and outlining a possible typology of mechanisms. A number of theoretical and practical implications for evaluators are also discussed, along with some precautions to consider when investigating mechanisms that might plausibly account for program outcomes.
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Both a published literature review and critical discussions in the applied literature cite several methodological challenges associated with a RE approach, including deciding what constitutes a mechanism, and differentiating between what is a mechanism and what is context.
“Both a published literature review 112 and critical discussions in the applied literature cite several methodological challenges associated with a RE approach, including deciding what constitutes a mechanism, 127 and indeed differentiating between what is a mechanism and what is context.”
From ReseArch with Patient and Public invOlvement: a RealisT evaluation – the RAPPORT study (2015) · cites this paper as [127]
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“Therefore, when theorybased evaluation is applied, central assumptions need to be unpacked retrospectively.(32) There are a number of frameworks for developing or reconstructing the underlying theories of how a program is intended to work and what it is intended to achieve.”
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- Authors
- Astbury, B., & Leeuw, F. L.
- Affiliations
- The University of Melbourne (AU)
- Maastricht University (NL)
- Corresponding author
- Astbury, Brad
- Venue
- American Journal of Evaluation
- Publisher
- SAGE Publications
- Published
- 2010-09
- Volume
- 31
- Issue
- 3
- Pages
- 363-381
- ISSN
- 1098-2140 (ISSN-L)
- 1557-0878
- OpenAlex
- W2028200801
- Semantic Scholar
- 2097836b832fe93938565ae987d89e17fd7f64ef
- Cited by
- 850
- References
- 105
- Citations by year
- 2026: 44 · 2025: 48 · 2024: 55 · 2023: 68 · 2022: 70 · 2021: 87 · 2020: 87 · 2019: 81 · 2018: 69 · 2017: 50 · 2016: 50 · 2015: 44 · 2014: 35 · 2013: 23 · 2012: 24
- FWCI
- 26.16
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- American Journal of Evaluation (publishedVersion)
- Topics
- Social Sciences › Decision Sciences › Management Science and Operations Research › Evaluation and Performance Assessment
- Social Sciences › Sociology and Political Science › Qualitative Comparative Analysis Research
- Physical Sciences › Mathematics › Statistics and Probability › Advanced Causal Inference Techniques
- Keywords
- causal mechanisms, program evaluation, policy evaluation, theory development, program outcomes, evaluator practice
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