방법 비교

	요인 단일사례 실험 설계	ABAB 설계
분야	실험설계	실험설계
계열	Process / pipeline	Process / pipeline
기원 연도	1970s–1980s	1960s (Sidman 1960; Baer et al. 1968)
창시자	Applied behavior analysis tradition; systematized in Barlow & Hersen (1984) and Kazdin (1982)	Murray Sidman; Baer, Wolf & Risley (applied behavior analysis formalization)
유형	Experimental single-subject design with multiple independent variables	Single-subject experimental design
원전	Kazdin, A. E. (2011). Single-Case Research Designs: Methods for Clinical and Applied Settings (2nd ed.). Oxford University Press. ISBN: 978-0195341881	Sidman, M. (1960). Tactics of Scientific Research: Evaluating Experimental Data in Psychology. Basic Books.
별칭	factorial SCED, factorial single-case design, factorial N-of-1 design, factorial within-subject experimental design	reversal design, withdrawal design, ABAB reversal, operant reversal design
관련	6	4
요약	A factorial single-subject experimental design applies the logic of factorial experiments — manipulating two or more independent variables simultaneously to study main effects and interactions — within a single-subject (N=1 or small N) repeated-measures framework. Instead of comparing groups, the same individual serves as their own control across systematically varied conditions, enabling fine-grained analysis of how multiple treatment components combine to influence behavior or clinical outcomes.	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.