השוואת שיטות

	עיצוב ABAB פקטוריאלי	תכנון ניסויי של נבדק יחיד
תחום	תכנון ניסויים	תכנון ניסויים
משפחה	Process / pipeline	Process / pipeline
שנת המקור	1960s–1970s (integration of factorial and single-subject reversal traditions)	1960s (Sidman 1960; formal applied codification by Kazdin and Baer in 1970s–1980s)
הוגה השיטה	Derived from Sidman (1960) reversal logic and Fisher & Yates factorial principles; systematized in applied behavior analysis	Murray Sidman (foundational tactics); B. F. Skinner (applied behavior analysis lineage)
סוג	Single-subject experimental design	Experimental research design
מקור מכונן	Kazdin, A. E. (2011). Single-Case Research Designs: Methods for Clinical and Applied Settings (2nd ed.). Oxford University Press. ISBN: 978-0195341881	Kazdin, A. E. (1982). Single-Case Research Designs: Methods for Clinical and Applied Settings. Oxford University Press. ISBN: 978-0195030440
כינויים	factorial reversal design, factorial withdrawal design, multi-factor ABAB design, factorial single-subject reversal	SSED, single-case experimental design, n-of-1 design, intrasubject replication design
קשורות	5	6
תקציר	The factorial ABAB design embeds a factorial structure within the classical ABAB reversal framework, enabling a single participant or a small set of participants to experience multiple factor combinations across alternating baseline (A) and treatment (B) phases. By systematically withdrawing and reinstating treatment conditions that vary across two or more factors, the design allows examination of both main effects and interactions at the individual level, providing strong experimental control through within-subject replication.	Single-subject experimental design (SSED) establishes experimental control by repeatedly measuring one individual (or a small number of individuals) across baseline and intervention phases, using the participant as their own control. Instead of comparing groups, it compares the participant's own behavior across conditions over time. Widely used in applied behavior analysis, special education, rehabilitation, and clinical psychology, SSED allows causal inference from small or unique samples where group designs are impractical.