مقایسهٔ روش‌ها

	طراحی آزمایشی تک‌موضوعی مقدماتی AB	طرح خط مبنای چندگانه
حوزه	طراحی آزمایش	طراحی آزمایش
خانواده	Process / pipeline	Process / pipeline
سال پیدایش	1960s (AB design); pilot framing formalized in practice by 1980s–1990s	1968
پدیدآور	Murray Sidman; Baer, Wolf & Risley (AB logic); pilot application emergent from single-subject research practice	Donald M. Baer, Montrose M. Wolf, Todd R. Risley
نوع	Single-subject pilot experimental design	Single-subject experimental design
منبع بنیادین	Baer, D. M., Wolf, M. M., & Risley, T. R. (1968). Some current dimensions of applied behavior analysis. Journal of Applied Behavior Analysis, 1(1), 91-97.	Baer, D. M., Wolf, M. M., & Risley, T. R. (1968). Some current dimensions of applied behavior analysis. Journal of Applied Behavior Analysis, 1(1), 91–97.
نام‌های دیگر	pilot AB phase design, preliminary AB design, exploratory AB single-case design, feasibility AB design	MBD, multiple-baseline single-case design, staggered baseline design, multiple-probe design
مرتبط	6	4
خلاصه	A pilot AB design applies the two-phase baseline-then-intervention structure of the AB single-subject design in an explicitly exploratory or feasibility mode — before committing to a more rigorous reversal or multiple-baseline study. The researcher collects repeated baseline (A) and intervention (B) data from one or a few individuals primarily to test measurement procedures, estimate effect size, verify data stability, and determine whether a stronger single-case design is warranted and feasible.	The multiple baseline design is a single-subject experimental design that demonstrates functional control by introducing an intervention at staggered time points across two or more baselines — typically across different behaviors, individuals, or settings. Because no withdrawal of treatment is required, it is especially suitable when the target behavior is irreversible or when removing an effective intervention would be unethical.