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	Pilot ABAB Design	ABAB-design
Ämnesområde	Försöksplanering	Försöksplanering
Familj	Process / pipeline	Process / pipeline
Ursprungsår	1960s (ABAB base); pilot application codified c. 2000s	1960s (Sidman 1960; Baer et al. 1968)
Upphovsperson	Derived from ABAB reversal design (Sidman, 1960); pilot framing formalized in behavioral intervention feasibility literature (late 20th–early 21st century)	Murray Sidman; Baer, Wolf & Risley (applied behavior analysis formalization)
Typ	Single-subject experimental feasibility design	Single-subject experimental design
Ursprungskälla	Byiers, B. J., Reichle, J., & Symons, F. J. (2012). Single-subject experimental design for evidence-based practice. American Journal of Speech-Language Pathology, 21(4), 397–414.	Sidman, M. (1960). Tactics of Scientific Research: Evaluating Experimental Data in Psychology. Basic Books.
Alias	pilot reversal design, feasibility ABAB design, pilot withdrawal design, pilot single-subject reversal	reversal design, withdrawal design, ABAB reversal, operant reversal design
Närliggande	6	4
Sammanfattning	A Pilot ABAB design is a small-scale feasibility trial of the ABAB reversal design, conducted with one or a few participants to test whether an intervention produces reliable behavior change under alternating baseline and treatment conditions before committing resources to a larger study. It combines the internal-validity logic of the ABAB reversal with the limited scope and preliminary aims of a pilot investigation.	The ABAB design is a single-subject experimental methodology that establishes causal control by repeatedly introducing and removing an intervention. A baseline phase (A) is followed by an intervention phase (B), then a return to baseline (A), and a second intervention phase (B), allowing the researcher to demonstrate that observed behavior changes are produced by the intervention rather than by coincidental factors.