Compară metode

	Design Experimental cu Grup de Control Randomizat pe Clusteri	Design Experimental Pretest-Posttest
Domeniu	Design experimental	Design experimental
Familie	Process / pipeline	Process / pipeline
Anul apariției	1990s (formal methodology development)	1963 (formalized in Campbell & Stanley)
Autorul original	Murray, D. M.; Donner, A. and Klar, N. (systematic formalization)	Donald T. Campbell and Julian C. Stanley
Tip	Experimental design	Experimental / quasi-experimental research design
Sursa seminală	Donner, A., & Klar, N. (2000). Design and Analysis of Cluster Randomization Trials in Health Research. Arnold. ISBN: 978-0340691533	Campbell, D. T., & Stanley, J. C. (1963). Experimental and Quasi-Experimental Designs for Research. Rand McNally.
Denumiri alternative	CRCT with control group, group-randomized trial, cluster RCT control group design, community randomized controlled trial	pretest-posttest design, before-after design, pre-post design, two-wave experimental design
Înrudite	6	5
Rezumat	A cluster randomized control group experimental design randomly assigns intact groups (clusters) — such as schools, clinics, or communities — rather than individuals to treatment or control conditions. At least one cluster group receives no active intervention, serving as the control. This design is essential when individual randomization is impractical or contamination between participants in close proximity is likely.	The pretest-posttest experimental design measures participants on the outcome variable before and after treatment, typically with random assignment to treatment and control groups. The difference between pre- and post-scores isolates the treatment effect from baseline variation, making this one of the most widely used frameworks in experimental and quasi-experimental research across education, psychology, medicine, and the social sciences.