قارن الطرق

	تصميم تجريبي تمهيدي أحادي الحالة	تصميم AB
المجال	التصميم التجريبي	التصميم التجريبي
العائلة	Process / pipeline	Process / pipeline
سنة النشأة	2000s–2010s (as an explicitly named piloting strategy for SSED)	1960s
صاحب الطريقة	Derived from single-subject experimental design traditions (Sidman, 1960; Kazdin) and pilot study methodology (Lancaster, Dodd, Williamson, 2004; Thabane et al., 2010)	Murray Sidman; Baer, Wolf & Risley
النوع	Pilot experimental design	Single-subject experimental design
المصدر التأسيسي	Thabane, L., Ma, J., Chu, R., Cheng, J., Ismaila, A., Rios, L. P., ... & Goldsmith, C. H. (2010). A tutorial on pilot studies: the what, why and how. BMC Medical Research Methodology, 10(1), 1.	Sidman, M. (1960). Tactics of Scientific Research: Evaluating Experimental Data in Psychology. Basic Books.
الأسماء البديلة	pilot SSED, pilot N-of-1 experiment, pilot single-case experimental design, pilot SCED	baseline-intervention design, AB single-case design, AB phase design
ذات صلة	6	4
الملخص	A pilot single-subject experimental design (pilot SSED) is a small-scale feasibility trial applied to one or very few individuals, combining the repeated-measurement logic of single-subject experimental design with the explicit preparatory aims of a pilot study. It is used to test an intervention protocol, measurement procedures, and design logistics before committing to a full-scale single-case or group experiment.	The AB design is the simplest single-subject experimental design, consisting of two sequential phases: a baseline phase (A) in which the target behavior is observed under natural conditions without intervention, followed by an intervention phase (B) in which the treatment or manipulation is introduced. Changes in the behavior's level, trend, or variability between phases are used to infer the effect of the intervention on the individual participant.