手法を比較

	適応型ABデザイン	適応実験
分野	実験計画法	実験計画法
系統	Process / pipeline	Process / pipeline
提唱年	1968 (AB foundation); 2000s (adaptive extensions)	1940s–1970s (sequential foundations); formalised in clinical and behavioural research by 1980s–2000s
提唱者	Baer, Wolf & Risley (AB foundation); Kratochwill & Levin (adaptive single-case extensions)	Abraham Wald (sequential analysis foundation); expanded by Robbins, Armitage, and others
種類	Single-subject experimental design with adaptive phase-change rules	Experimental research design
原典	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.	Chow, S. C., & Chang, M. (2008). Adaptive Design Methods in Clinical Trials. Chapman and Hall/CRC. ISBN: 978-1584886761
別名	adaptive single-case AB design, data-driven AB design, adaptive baseline-intervention design, adaptive AB phase design	adaptive design, response-adaptive randomization, adaptive trial, adaptive randomization
関連	6	5
概要	The adaptive AB design is a single-subject experimental design that retains the two-phase baseline-then-intervention structure of the classic AB design but replaces fixed session-count rules with pre-specified data-driven criteria — such as stability thresholds or trend benchmarks — that determine when to transition between phases. This adaptive logic allows the phase boundary to move in response to the individual participant's actual performance trajectory rather than a predetermined schedule.	An adaptive experiment is an experimental design in which pre-specified rules allow the protocol to be modified — such as reallocating participants to better-performing arms, stopping early for efficacy or futility, or changing sample size — based on accumulating interim data, while maintaining statistical validity. Adaptive designs are widely used in clinical trials, behavioural economics, and online platform testing to improve efficiency and ethics without sacrificing inferential rigour.