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	Enkelblind Enkelpersons Experimentell Design	AB-design
Ämnesområde	Försöksplanering	Försöksplanering
Familj	Process / pipeline	Process / pipeline
Ursprungsår	1970s–1984 (consolidated)	1960s
Upphovsperson	Barlow & Hersen (single-subject methodology); blinding conventions from clinical trial tradition	Murray Sidman; Baer, Wolf & Risley
Typ	Controlled experimental design variant	Single-subject experimental design
Ursprungskälla	Barlow, D. H., & Hersen, M. (1984). Single case experimental designs: Strategies for studying behavior change (2nd ed.). Pergamon Press. ISBN: 978-0080302378	Sidman, M. (1960). Tactics of Scientific Research: Evaluating Experimental Data in Psychology. Basic Books.
Alias	single-blind N-of-1 design, SB-SSED, single-blind within-subject design, single-blind single-case experimental design	baseline-intervention design, AB single-case design, AB phase design
Närliggande	6	4
Sammanfattning	A single-blind single-subject experimental design (SB-SSED) applies a single-blind protocol to an N-of-1 experiment: one individual participant is studied intensively across alternating or sequential phases, and either the participant or the assessor — but not both — is kept unaware of the current treatment condition. This design combines the idiographic power of single-subject methodology with a structured blinding control to reduce performance or assessment bias, and is common in applied behavior analysis, clinical psychology, and rehabilitation research.	The AB design is the simplest single-subject experimental design, consisting of two sequential phases: a baseline phase (A) in which the target behavior is observed under natural conditions without intervention, followed by an intervention phase (B) in which the treatment or manipulation is introduced. Changes in the behavior's level, trend, or variability between phases are used to infer the effect of the intervention on the individual participant.