48 entries under expression topic. ×

7
data collection method(study, type, research)
7
dependent variable(study, type, research)
7
descriptive-longitudinal case study(study, type, research)
7
independent variable(study, type, research)
7
research problem(study, type, research)
7
review type(study, type, research)
7
statistical analysis plan(study, type, research)
4
case-control study(design, collection, research)
4
experiment with random assignment(design, collection, research)
4
field experiment(design, collection, research)
4
literature review(design, collection, research)
4
naturalistic observation(design, collection, research)
4
observational study(design, collection, research)
4
systematic review(design, collection, research)
3
case study(type, design, flexible, research)
3
cohort study(characteristic, study, duration)
3
confirmatory research(type, research, hypothesis)
3
cross-sectional study(characteristic, study, duration)
3
cross-sequential study(characteristic, study, duration)
3
ethnographic study(type, design, flexible, research)
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APASmart Define. (1970). research design thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/research_design/thesaurus/narrower
ChicagoSmart Define. 1970. "research design thesaurus" https://smartdefine.org/research_design/thesaurus/narrower (accessed September 23, 2026).
HarvardSmart Define 1970, research design thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/research_design/thesaurus/narrower>.
MLASmart Define. "research design thesaurus" 1 January 1970. Web. 23 September 2026. <https://smartdefine.org/research_design/thesaurus/narrower>