手法を比較

	等重み多層混合研究法デザイン	説明的逐次型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	2000s–2010s	2007 (formalized in Creswell & Plano Clark's mixed methods typology)
提唱者	Tashakkori & Teddlie; Creswell & Plano Clark	John W. Creswell & Vicki L. Plano Clark
種類	Mixed methods research design	Mixed methods research design
原典	Creswell, J. W., & Plano Clark, V. L. (2017). Designing and Conducting Mixed Methods Research (3rd ed.). Sage. ISBN: 978-1483344379	Creswell, J. W., & Plano Clark, V. L. (2018). Designing and Conducting Mixed Methods Research (3rd ed.). Sage. ISBN: 978-1483344379
別名	QUAN+QUAL multilevel design, equal-status multilevel mixed methods, balanced multilevel mixed methods, equal-priority multilevel mixed methods	explanatory sequential design, QUAN → qual design, two-phase explanatory design, sequential explanatory design
関連	6	6
概要	Equal-weight multilevel mixed methods is a mixed methods design in which quantitative and qualitative data strands are collected at two or more distinct levels of a social system — such as students, classrooms, and schools — and both strands carry equal analytic priority. The QUAN+QUAL notation (where '+' signals equal weight) is applied across each level, and integration occurs both within and between levels to build a comprehensive, multi-perspectival understanding.	The explanatory sequential mixed methods design is a two-phase research approach in which a quantitative study is conducted first, and qualitative data are then collected specifically to help explain or elaborate the initial quantitative results. The quantitative phase carries greater priority; the qualitative phase is purposefully built around the findings — such as surprising results, outliers, or statistically significant relationships — that need deeper interpretation.