手法を比較

	説明的逐次型混合研究法デザイン	調査研究
分野	研究デザイン	研究デザイン
系統	Process / pipeline	Process / pipeline
提唱年	2007 (formalized in Creswell & Plano Clark's mixed methods typology)	Late 19th century; methodologically systematised 1940s–1960s
提唱者	John W. Creswell & Vicki L. Plano Clark	Francis Galton, Charles Booth, and early social statisticians; systematised by Paul Lazarsfeld and colleagues at Columbia in the 1940s
種類	Mixed methods research design	Quantitative (and mixed) non-experimental design
原典	Creswell, J. W., & Plano Clark, V. L. (2018). Designing and Conducting Mixed Methods Research (3rd ed.). Sage. ISBN: 978-1483344379	Fowler, F. J. (2014). Survey Research Methods (5th ed.). Sage Publications. ISBN: 978-1452259000
別名	explanatory sequential design, QUAN → qual design, two-phase explanatory design, sequential explanatory design	survey methodology, questionnaire research, survey design, survey study
関連	6	4
概要	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.	Survey research is a quantitative (and sometimes mixed-methods) design in which a researcher collects standardised self-report data from a sample drawn from a defined population, using a questionnaire or structured interview. It is the dominant non-experimental strategy for describing population characteristics, estimating prevalence, mapping attitude distributions, and testing bivariate or multivariate associations across social, behavioural, and health sciences.