手法を比較

	トレンド調査	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	Mid-20th century (formalised in social science methodology ~1950s–1960s)	Late 19th century; methodologically systematised 1940s–1960s
提唱者	Earl Babbie and survey research tradition	Francis Galton, Charles Booth, and early social statisticians; systematised by Paul Lazarsfeld and colleagues at Columbia in the 1940s
種類	Quantitative longitudinal research design	Quantitative (and mixed) non-experimental design
原典	Creswell, J. W. (2014). Research Design: Qualitative, Quantitative, and Mixed Methods Approaches (4th ed.). Sage. ISBN: 978-1452226101	Fowler, F. J. (2014). Survey Research Methods (5th ed.). Sage Publications. ISBN: 978-1452259000
別名	trend study, trend survey, longitudinal trend study, time-series survey	survey methodology, questionnaire research, survey design, survey study
関連	4	4
概要	Trend research is a longitudinal quantitative design that tracks changes in a characteristic of a general population over time by surveying different, independently drawn samples at two or more time points. Unlike panel studies, the same individuals are not followed; rather, each wave draws a fresh sample from the same population, allowing researchers to detect population-level shifts in attitudes, behaviours, or conditions while avoiding the attrition and panel conditioning problems of repeated-measures designs.	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.