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	Faktoriell ABA-design	ABAB-design
Ämnesområde	Försöksplanering	Försöksplanering
Familj	Process / pipeline	Process / pipeline
Ursprungsår	1968 (ABA base); factorial extensions developed through 1980s–2000s	1960s (Sidman 1960; Baer et al. 1968)
Upphovsperson	Derived from ABA reversal design (Baer, Wolf & Risley, 1968) extended with factorial manipulation principles	Murray Sidman; Baer, Wolf & Risley (applied behavior analysis formalization)
Typ	Single-case experimental design with factorial treatment structure	Single-subject experimental design
Ursprungskälla	Kratochwill, T. R., & Levin, J. R. (Eds.). (2010). Single-Case Intervention Research: Methodological and Statistical Advances. American Psychological Association. ISBN: 978-1433807909	Sidman, M. (1960). Tactics of Scientific Research: Evaluating Experimental Data in Psychology. Basic Books.
Alias	Factorial reversal design, Multi-factor ABA design, Factorial withdrawal design, SCED factorial ABA	reversal design, withdrawal design, ABAB reversal, operant reversal design
Närliggande	6	4
Sammanfattning	The Factorial ABA design embeds a factorial treatment structure within the ABA reversal framework. Rather than testing a single treatment against baseline, the researcher systematically varies two or more independent variables (factors) across treatment phases, using the ABA withdrawal logic to establish experimental control. This makes it possible to examine main effects and interactions among treatment components within a single-case or small-N experimental context.	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.