مقایسهٔ روش‌ها

	ارزیابی چندمرحله‌ای با تمرکز بر ارزیابی	طرح روش‌های ترکیبی مداخله‌ای
حوزه	طراحی پژوهش	طراحی پژوهش
خانواده	Process / pipeline	Process / pipeline
سال پیدایش	2007–2009 (multiphase design formalized 2007; evaluation-focused applications consolidated ca. 2009)	2000s–2010s (systematised in Creswell & Plano Clark, 2011–2018)
پدیدآور	John W. Creswell & Vicki L. Plano Clark (multiphase design); Stewart I. Donaldson and colleagues (evaluation-focused framing)	John W. Creswell & Vicki L. Plano Clark
نوع	Mixed methods research design — program evaluation variant	Mixed methods research design
منبع بنیادین	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
نام‌های دیگر	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
مرتبط	6	6
خلاصه	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.