aovJackknifeAdjustment | R Documentation |
Adjust ezANOVA table with corrected F (Fc = F/(n-1)^2) and p values for jackkniffed data (see Ulrich and Miller, 2001. Using the jackknife-based scoring method for measuring LRP onset effects in factorial designs. Psychophysiology, 38, 816-827.)
aovJackknifeAdjustment(aovObj, numVPs)
aovObj |
Output from aov or ezANOVA |
numVPs |
The number of participants |
list
# Example 1: # create dataframe with 2(Comp: comp vs. incomp) and 2(Side: left vs. right) factors/levels dat <- createDF(nVP = 20, nTrl = 1, design = list("Comp" = c("comp", "incomp"), "Side" = c("left", "right"))) dat <- addDataDF(dat, RT = list("Comp:Side comp:left" = c(500, 150, 150), "Comp:Side comp:right" = c(500, 150, 150), "Comp:Side incomp:left" = c(500, 150, 150), "Comp:Side incomp:right" = c(500, 150, 150))) aovRT <- aov(RT ~ Comp*Side + Error(VP/(Comp*Side)), dat) aovRT <- aovJackknifeAdjustment(aovRT, length(unique(dat$VP))) aovDispTable(aovRT) # or with ezANOVA library(ez) aovRT <- ezANOVA(dat, dv=.(RT), wid = .(VP), within = .(Comp, Side), return_aov = TRUE, detailed = TRUE) aovRT <- aovJackknifeAdjustment(aovRT, length(unique(dat$VP))) aovDispTable(aovRT)
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