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	Multipel baslinjedesign	ABAB-design
Ämnesområde	Försöksplanering	Försöksplanering
Familj	Process / pipeline	Process / pipeline
Ursprungsår	1968	1960s (Sidman 1960; Baer et al. 1968)
Upphovsperson	Donald M. Baer, Montrose M. Wolf, Todd R. Risley	Murray Sidman; Baer, Wolf & Risley (applied behavior analysis formalization)
Typ	Single-subject experimental design	Single-subject experimental design
Ursprungskälla	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.	Sidman, M. (1960). Tactics of Scientific Research: Evaluating Experimental Data in Psychology. Basic Books.
Alias	MBD, multiple-baseline single-case design, staggered baseline design, multiple-probe design	reversal design, withdrawal design, ABAB reversal, operant reversal design
Närliggande	4	4
Sammanfattning	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.	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.