Võrdle meetodeid

	Blokeeritud eeltest-järeltestiga eksperimentaalne disain	Faktoriaalne eksperiment
Valdkond	Katsedisain	Katsedisain
Perekond	Process / pipeline	Process / pipeline
Tekkeaasta	1935 (blocking, Fisher); 1963 (pretest-posttest + blocking synthesis, Campbell & Stanley)	1926–1935
Looja	Donald T. Campbell & Julian C. Stanley (systematized); blocking technique from Ronald A. Fisher	Ronald A. Fisher
Tüüp	Experimental design	Quantitative experimental design
Algallikas	Campbell, D. T., & Stanley, J. C. (1963). Experimental and Quasi-Experimental Designs for Research. Rand McNally.	Fisher, R. A. (1935). The Design of Experiments. Oliver and Boyd.
Rööpnimetused	blocked pre-post design, RBPP design, block-randomized pretest-posttest design, randomized block pre-post control group design	factorial design, factorial ANOVA design, multi-factor experiment, crossed-factor design
Seotud	6	6
Kokkuvõte	The blocked pretest-posttest experimental design combines blocking — grouping participants into homogeneous strata before randomization — with pre- and post-intervention measurement. Blocking controls for known sources of variability (e.g., baseline ability, gender, site), while the pretest-posttest structure quantifies change scores directly. Together, they reduce error variance and increase statistical power compared to a simple pretest-posttest design, making this approach well suited to educational, clinical, and behavioral intervention studies.	A factorial experiment is an experimental design in which two or more independent variables (factors) are manipulated simultaneously, and every combination of their levels is tested. Introduced by Ronald Fisher in the 1920s–1930s, it is the standard approach whenever a researcher needs to detect not only the main effect of each factor but also whether the effect of one factor depends on the level of another — the interaction effect.