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	評価に焦点を当てた多段階混合研究法	介入混合研究法デザイン
分野	研究デザイン	研究デザイン
系統	Process / pipeline	Process / pipeline
提唱年	2007–2009 (multiphase design formalized 2007; evaluation-focused applications consolidated ca. 2009)	2000s–2010s (systematised in Creswell & Plano Clark, 2011–2018)
提唱者	John W. Creswell & Vicki L. Plano Clark (multiphase design); Stewart I. Donaldson and colleagues (evaluation-focused framing)	John W. Creswell & Vicki L. Plano Clark
種類	Mixed methods research design — program evaluation variant	Mixed methods research design
原典	Donaldson, S. I., Christie, C. A., & Mark, M. M. (Eds.). (2009). What Counts as Credible Evidence in Applied Research and Evaluation Practice? Sage. ISBN: 978-1412957090	Creswell, J. W., & Plano Clark, V. L. (2018). Designing and Conducting Mixed Methods Research (3rd ed.). Sage. ISBN: 978-1483344379
別名	evaluation multiphase mixed methods, program evaluation multiphase design, mixed methods program evaluation, evaluative multiphase design	intervention MMR design, mixed methods intervention study, intervention-embedded mixed design, trial-embedded mixed methods
関連	6	6
概要	The evaluation-focused multiphase mixed methods design applies the multiphase mixed methods framework explicitly to program evaluation contexts, orchestrating three or more sequential or iterative phases — each drawing on quantitative measures, qualitative inquiry, or both — to assess a program, policy, or intervention from needs assessment through impact evaluation. An overarching evaluation question unifies all phases, and findings from each phase directly shape the evaluation questions and methods of the next.	Intervention mixed methods design embeds qualitative data collection within an experimental or quasi-experimental study so that process, mechanism, and participant experience are captured alongside outcome measurement. The quantitative strand tests whether the intervention works; the qualitative strand explains how and why it works — or does not. The two strands may be sequenced before, during, or after the intervention phase, or run concurrently, depending on the research questions.