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	Crossoverlaboratorieexperiment	Faktoriellt laboratorieexperiment
Ämnesområde	Försöksplanering	Försöksplanering
Familj	Process / pipeline	Process / pipeline
Ursprungsår	Mid-20th century; consolidated 1980s–2000s	1926 (Fisher's factorial principle); laboratory application systematized mid-20th century
Upphovsperson	Established in pharmacological and behavioral research; Jones & Kenward formalized the framework	Ronald A. Fisher
Typ	Within-subjects experimental design	Experimental research design
Ursprungskälla	Jones, B., & Kenward, M. G. (2014). Design and Analysis of Cross-Over Trials (3rd ed.). CRC Press. ISBN: 978-1439861424	Kirk, R. E. (2013). Experimental Design: Procedures for the Behavioral Sciences (4th ed.). Sage Publications. ISBN: 978-1412974455
Alias	within-subjects crossover lab study, repeated-measures crossover experiment, crossover controlled lab experiment, within-person laboratory crossover trial	factorial lab experiment, laboratory factorial design, factorial controlled experiment, multi-factor lab study
Närliggande	5	2
Sammanfattning	A crossover laboratory experiment is a within-subjects experimental design conducted in a controlled lab environment in which each participant receives two or more treatments sequentially, serving as their own control. By eliminating between-person variability from the error term, it yields high statistical power with relatively small samples. Treatment order is randomized or counterbalanced across participants to guard against order and carryover effects.	A factorial laboratory experiment is a controlled experimental design in which two or more independent variables (factors) are simultaneously manipulated, each at two or more levels, within a laboratory setting. This design allows researchers to estimate both the individual main effect of each factor and the interaction effects between factors — making it one of the most efficient and informative designs in behavioral, psychological, and natural science research.