השוואת שיטות

	תכנון ניסויי עם מדיקציה כפולה-סמיות לפני ואחרי התערבות	תכנון ניסויי עם קבוצת ביקורת
תחום	תכנון ניסויים	תכנון ניסויים
משפחה	Process / pipeline	Process / pipeline
שנת המקור	1963 (systematic codification); blinding in use from early 20th century	1935 (Fisher); 1963 (Campbell & Stanley codification)
הוגה השיטה	Campbell & Stanley (codified); blinding practice has earlier roots in clinical research	Ronald A. Fisher; systematised by Donald T. Campbell & Julian C. Stanley
סוג	Controlled experimental design with partial blinding	Experimental research design
מקור מכונן	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.
כינויים	single-masked pretest-posttest design, participant-blind pretest-posttest, single-blind before-after design, SB-PP design	controlled experiment, true experimental design, randomized controlled design, treatment-control design
קשורות	6	4
תקציר	The single-blind pretest-posttest experimental design combines two protective strategies: measuring outcomes both before and after treatment to quantify change, and keeping participants unaware of which condition they are in. This pairing controls for preexisting group differences and expectancy-driven response bias, making it a practical middle ground between fully open-label and double-blind trials in behavioral and health research.	Control group experimental design is a fundamental experimental structure in which participants are assigned to at least two groups — a treatment group that receives the intervention and a control group that does not — so that the effect of the intervention can be isolated by comparing outcomes across groups. Randomisation of assignment strengthens causal inference by balancing known and unknown confounders.