قارن الطرق

	تصميم التجربة على الفرد الواحد	بحث الحالة
المجال	التصميم التجريبي	نوعي
العائلة	Process / pipeline	Process / pipeline
سنة النشأة	1960s (Sidman 1960; formal applied codification by Kazdin and Baer in 1970s–1980s)	1984 (seminal codification)
صاحب الطريقة	Murray Sidman (foundational tactics); B. F. Skinner (applied behavior analysis lineage)	Robert K. Yin (systematised in Case Study Research, 1984)
النوع	Experimental research design	Qualitative research design
المصدر التأسيسي	Kazdin, A. E. (1982). Single-Case Research Designs: Methods for Clinical and Applied Settings. Oxford University Press. ISBN: 978-0195030440	Yin, R.K. (2018). Case Study Research and Applications: Design and Methods (6th ed.). Sage. ISBN: 978-1506336169
الأسماء البديلة	SSED, single-case experimental design, n-of-1 design, intrasubject replication design	Vaka Çalışması (Case Study), case study design, case study methodology
ذات صلة	6	5
الملخص	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.	Case study research is a qualitative research design that investigates a specific phenomenon, individual, group, organisation, or event in depth within its real-world context. Systematised by Robert K. Yin in 1984, it supports single-case and multiple-case designs and draws on multiple data sources — interviews, observation, documents, and artefacts — to build a rich, contextualised account of a bounded unit.