So sánh phương pháp

	Thiết kế nghiên cứu thực nghiệm nhóm chứng giả dược	Thiết kế thực nghiệm đo lường trước và sau can thiệp
Lĩnh vực	Thiết kế thí nghiệm	Thiết kế thí nghiệm
Họ	Process / pipeline	Process / pipeline
Năm ra đời	Mid-20th century; widely formalized by 1980s–2000s	1963 (formalized in Campbell & Stanley)
Người khởi xướng	Established through clinical and behavioral research traditions; formalized by Bradford Hill and colleagues in mid-20th century trial methodology	Donald T. Campbell and Julian C. Stanley
Loại	Experimental design (pilot/feasibility variant)	Experimental / quasi-experimental research design
Công trình gốc	Thabane, L., Ma, J., Chu, R., Cheng, J., Ismaila, A., Rios, L. P., Robson, R., Thabane, M., Giangregorio, L., & Goldsmith, C. H. (2010). A tutorial on pilot studies: the what, why and how. BMC Medical Research Methodology, 10, 1.	Campbell, D. T., & Stanley, J. C. (1963). Experimental and Quasi-Experimental Designs for Research. Rand McNally.
Tên gọi khác	pilot controlled experiment, pilot RCT feasibility study, small-scale controlled trial, pilot control group study	pretest-posttest design, before-after design, pre-post design, two-wave experimental design
Liên quan	4	5
Tóm tắt	A pilot control group experimental design is a small-scale, preliminary experiment that includes both a treatment group and a control group, conducted before the main study to test whether the full trial is feasible. It produces early effect-size estimates, identifies protocol problems, and confirms that random (or systematic) assignment to conditions is workable — all while generating a genuine comparison between treated and untreated participants.	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.