手法を比較

	ABABデザイン	ABAデザイン
分野	実験計画法	実験計画法
系統	Process / pipeline	Process / pipeline
提唱年	1960s (Sidman 1960; Baer et al. 1968)	1968
提唱者	Murray Sidman; Baer, Wolf & Risley (applied behavior analysis formalization)	Montrose Wolf, Donald Baer, Todd Risley (applied behavior analysis tradition)
種類	Single-subject experimental design	Single-subject experimental design
原典	Sidman, M. (1960). Tactics of Scientific Research: Evaluating Experimental Data in Psychology. Basic Books.	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.
別名	reversal design, withdrawal design, ABAB reversal, operant reversal design	reversal design, withdrawal design, ABA withdrawal design
関連	4	4
概要	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.	The ABA design is a single-subject experimental design that demonstrates experimental control through three sequential phases: a baseline phase (A1), an intervention phase (B), and a return-to-baseline withdrawal phase (A2). By removing the intervention in the final phase and observing whether behavior reverts toward baseline levels, researchers establish a functional relationship between the treatment and the target behavior for an individual participant.