विधियों की तुलना करें

	अनुकूली पूर्व-परीक्षण-पश्च-परीक्षण प्रायोगिक डिज़ाइन	पूर्व-परीक्षण-पश्चात-परीक्षण प्रायोगिक अभिकल्पना
क्षेत्र	प्रयोगात्मक अभिकल्प	प्रयोगात्मक अभिकल्प
परिवार	Process / pipeline	Process / pipeline
उद्भव वर्ष	2000s (integration of adaptive principles with classic pre-post structure)	1963 (formalized in Campbell & Stanley)
प्रवर्तक	Synthesizes Campbell & Stanley (1963) pretest-posttest framework with adaptive design methodology formalized by Chow & Chang (2000s)	Donald T. Campbell and Julian C. Stanley
प्रकार	Experimental design	Experimental / quasi-experimental research design
मौलिक स्रोत	Campbell, D. T., & Stanley, J. C. (1963). Experimental and Quasi-Experimental Designs for Research. Rand McNally.	Campbell, D. T., & Stanley, J. C. (1963). Experimental and Quasi-Experimental Designs for Research. Rand McNally.
उपनाम	adaptive pre-post design, adaptive pretest-posttest trial, adaptive two-period design, pre-post adaptive experiment	pretest-posttest design, before-after design, pre-post design, two-wave experimental design
संबंधित	6	5
सारांश	An adaptive pretest-posttest experimental design measures all participants before and after an intervention while allowing pre-specified modifications to the trial — such as sample size re-estimation, treatment arm dropping, or randomization ratio adjustment — based on accumulated interim data. It combines the interpretive power of change-score analysis with the efficiency gains and ethical safeguards of adaptive methodology, making it particularly valuable in clinical, educational, and behavioral research where early data can inform better resource allocation.	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.