A real experiment is a factorial experiment

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The cave of Shadows. Addressing the human factor with generalized additive mixed models (2015, background): “ or long versus short acoustic duration, makes it possible to apply analysis of variance, dichotomization of continuous variables has many undesirable properties (Cohen, 1983; MacCallum et al., 2002; Baayen, 2010), and should be avoided if only to avoid unnecessary loss of power. For research questi”
Models, forests, and trees of York English: Was/were variation as a case study for statistical practice (2012, methodology): “One disadvantage of this method is a potential loss of power, in other words, the likelihood of detecting an effect that is actually present in the data decreases (see, e.g., Baayen, 2010, and references cited there).”