3
cohort study(expression, characteristic, study, duration)
3
confirmatory research(expression, type, research, hypothesis)
3
cross-sectional study(expression, characteristic, study, duration)
3
cross-sequential study(expression, characteristic, study, duration)
3
ethnographic study(expression, type, design, flexible, research)
3
experimental research design(expression, fix, type, design, research)
3
exploratory research(expression, type, research, hypothesis)
3
grounded theory study(expression, type, design, flexible, research)
3
longitudinal study(expression, characteristic, study, duration)
3
non-experimental research design(expression, fix, type, design, research)
3
process problem(expression, design, problem, research)
3
research hypothesis(expression, study, type, research)
3
state problem(expression, design, problem, research)
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APASmart Define. (1970). research design thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/research_design/thesaurus/narrower
ChicagoSmart Define. 1970. "research design thesaurus" https://smartdefine.org/research_design/thesaurus/narrower (accessed September 25, 2026).
HarvardSmart Define 1970, research design thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/research_design/thesaurus/narrower>.
MLASmart Define. "research design thesaurus" 1 January 1970. Web. 25 September 2026. <https://smartdefine.org/research_design/thesaurus/narrower>