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| Single-blind ABAB-design× | Single-Subject Experimental Design× | |
|---|---|---|
| Fagområde | Forsøgsdesign | Forsøgsdesign |
| Familie | Process / pipeline | Process / pipeline |
| Oprindelsesår≠ | 1960s (ABAB logic); single-blind adaptation formalized in applied behavior analysis from 1970s onward | 1960s (Sidman 1960; formal applied codification by Kazdin and Baer in 1970s–1980s) |
| Ophavsperson≠ | B. F. Skinner (reversal logic); blinding conventions adapted from clinical trial methodology | Murray Sidman (foundational tactics); B. F. Skinner (applied behavior analysis lineage) |
| Type≠ | Single-case experimental design with partial blinding | Experimental research design |
| Oprindelig kilde≠ | 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 |
| Aliasser | single-blind reversal design, single-masked ABAB design, blinded single-case reversal design, single-blind withdrawal design | SSED, single-case experimental design, n-of-1 design, intrasubject replication design |
| Relaterede≠ | 5 | 6 |
| Resumé≠ | The single-blind ABAB design is a single-case experimental approach that sequences two baseline phases (A) and two intervention phases (B) to demonstrate experimental control over a target behavior, while keeping one party — typically the outcome assessor or the participant — unaware of current phase assignment. This blinding procedure reduces observer bias or demand characteristics, strengthening the internal validity of the reversal logic. | 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. |
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