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| Single-blind AB Design× | ABA-design – ABA-reversaldesign× | |
|---|---|---|
| Fagområde | Forsøgsdesign | Forsøgsdesign |
| Familie | Process / pipeline | Process / pipeline |
| Oprindelsesår≠ | 1960s (AB methodology); blinding adaptation in single-case research developed from 1970s onward | 1968 |
| Ophavsperson≠ | Murray Sidman; Baer, Wolf & Risley (AB logic); blinding conventions adapted from clinical trial methodology | Montrose Wolf, Donald Baer, Todd Risley (applied behavior analysis tradition) |
| Type≠ | Single-subject experimental design with assessor masking | Single-subject experimental design |
| Oprindelig kilde≠ | Kazdin, A. E. (2011). Single-Case Research Designs: Methods for Clinical and Applied Settings (2nd ed.). Oxford University Press. ISBN: 9780195341881 | Baer, D. M., Wolf, M. M., & Risley, T. R. (1968). Some current dimensions of applied behavior analysis. Journal of Applied Behavior Analysis, 1(1), 91–97. DOI ↗ |
| Aliasser | assessor-blind AB design, single-masked AB single-case design, observer-blind AB phase design | reversal design, withdrawal design, ABA withdrawal design |
| Relaterede≠ | 6 | 4 |
| Resumé≠ | The single-blind AB design is a single-subject experimental design that combines the two-phase AB structure — a baseline phase (A) followed by an intervention phase (B) — with assessor or observer masking. The individual collecting or rating outcome data is kept unaware of which phase is being measured, preventing knowledge of treatment status from biasing behavioral observations or ratings. The design improves on the standard AB design by reducing detection bias while retaining the practical and ethical advantages of single-subject methodology. | The ABA design is a single-subject experimental design that demonstrates experimental control through three sequential phases: a baseline phase (A1), an intervention phase (B), and a return-to-baseline withdrawal phase (A2). By removing the intervention in the final phase and observing whether behavior reverts toward baseline levels, researchers establish a functional relationship between the treatment and the target behavior for an individual participant. |
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