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	Faktoriellt fältexperiment	Faktoriell experiment
Ämnesområde	Försöksplanering	Försöksplanering
Familj	Process / pipeline	Process / pipeline
Ursprungsår	1920s–1935 (Fisher's foundational work); widely applied through 20th century	1926–1935
Upphovsperson	Ronald A. Fisher (factorial principle); extended to field settings in agricultural and social sciences	Ronald A. Fisher
Typ	Experimental design	Quantitative experimental design
Ursprungskälla	Fisher, R. A. (1935). The Design of Experiments. Oliver and Boyd.	Fisher, R. A. (1935). The Design of Experiments. Oliver and Boyd.
Alias	factorial design in the field, field factorial design, multi-factor field trial, factorial field trial	factorial design, factorial ANOVA design, multi-factor experiment, crossed-factor design
Närliggande	5	6
Sammanfattning	A factorial field experiment applies factorial experimental design — simultaneously manipulating two or more independent factors across all combinations of their levels — in a real-world field setting rather than a controlled laboratory. It allows researchers to estimate both main effects and interaction effects of multiple factors on an outcome under ecologically valid conditions, making findings directly relevant to practice.	A factorial experiment is an experimental design in which two or more independent variables (factors) are manipulated simultaneously, and every combination of their levels is tested. Introduced by Ronald Fisher in the 1920s–1930s, it is the standard approach whenever a researcher needs to detect not only the main effect of each factor but also whether the effect of one factor depends on the level of another — the interaction effect.