השוואת שיטות

	עיצוב AB כפול-סמיות	תכנון ניסויי של נבדק יחיד
תחום	תכנון ניסויים	תכנון ניסויים
משפחה	Process / pipeline	Process / pipeline
שנת המקור	1960s (AB design); double-blinding integration in single-case clinical research from the 1980s–1990s	1960s (Sidman 1960; formal applied codification by Kazdin and Baer in 1970s–1980s)
הוגה השיטה	Derived from the AB single-subject design tradition (Sidman 1960; Baer, Wolf, & Risley 1968) combined with double-blinding conventions from clinical trial methodology	Murray Sidman (foundational tactics); B. F. Skinner (applied behavior analysis lineage)
סוג	Single-subject experimental design with double-blinding	Experimental research design
מקור מכונן	Kazdin, A. E. (1982). Single-Case Research Designs: Methods for Clinical and Applied Settings. Oxford University Press. ISBN: 978-0195030440	Kazdin, A. E. (1982). Single-Case Research Designs: Methods for Clinical and Applied Settings. Oxford University Press. ISBN: 978-0195030440
כינויים	blinded AB design, double-blind single-case AB, masked AB design, double-blind baseline-intervention design	SSED, single-case experimental design, n-of-1 design, intrasubject replication design
קשורות	5	6
תקציר	The double-blind AB design is a single-subject experimental approach that sequences a baseline phase (A) and an intervention phase (B) while concealing phase allocation from both the participant and the outcome assessor. It merges the idiographic focus of single-case methodology with the bias-control mechanism of double-blinding, making it especially useful in clinical rehabilitation, pain research, and behavioral medicine when objective measurement of an individual's response to treatment is the primary goal.	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.