قارن الطرق

	تجربة ميدانية متصالبة	تصميم الخطوط الأساسية المتعددة
المجال	التصميم التجريبي	التصميم التجريبي
العائلة	Process / pipeline	Process / pipeline
سنة النشأة	1960s–1970s (field experiment framework); crossover application in non-clinical fields from 1980s onward	1968
صاحب الطريقة	Crossover design principles attributed to R. A. Fisher (1930s); field experiment tradition developed by Donald T. Campbell and Julian Stanley (1960s)	Donald M. Baer, Montrose M. Wolf, Todd R. Risley
النوع	Within-subject experimental design conducted in naturalistic settings	Single-subject experimental design
المصدر التأسيسي	Senn, S. (2002). Cross-over Trials in Clinical Research (2nd ed.). John Wiley & Sons. ISBN: 978-0471496533	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.
الأسماء البديلة	within-subject field experiment, crossover field trial, repeated-measures field experiment, field crossover design	MBD, multiple-baseline single-case design, staggered baseline design, multiple-probe design
ذات صلة	5	4
الملخص	A crossover field experiment is a within-subject experimental design conducted outside the laboratory in naturalistic, real-world settings. Each participant or unit receives multiple treatments in a randomized sequence, separated by washout periods, allowing researchers to observe causal effects while each unit serves as its own control. This approach combines the internal validity of crossover designs with the ecological validity characteristic of field experimentation.	The multiple baseline design is a single-subject experimental design that demonstrates functional control by introducing an intervention at staggered time points across two or more baselines — typically across different behaviors, individuals, or settings. Because no withdrawal of treatment is required, it is especially suitable when the target behavior is irreversible or when removing an effective intervention would be unethical.