psychReport (version 3.0.2)

effectsizeValueString: effectsizeValueString

Description

Returns required Latex formatted string for effect size (partial eta squared) = XXX for R/knitr integration. Returns values to 2 sig decimal places.

Usage

effectsizeValueString(aovObj, effect, effectSize = "pes")

Value

character

Arguments

aovObj

Output from aov or ezANOVA (NB. ezANOVA must be called with detailed = TRUE)

effect

The effect within the ANOVA table to return

effectSize

pes (partial eta squared) vs. ges (generalised eta squared)

Examples

# Example 1:
# create dataframe and add data with 2(Comp: comp vs. incomp) and 2(Side: left vs. right)
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, 100),
                                "Comp:Side comp:right"   = c(500, 150, 100),
                                "Comp:Side incomp:left"  = c(520, 150, 100),
                                "Comp:Side incomp:right" = c(520, 150, 100)))

aovRT <- aov(RT ~ Comp*Side + Error(VP/(Comp*Side)), dat)
aovRT <- aovTable(aovRT)

pesString <- effectsizeValueString(aovRT, "Comp")  # partial eta squared
pesString <- effectsizeValueString(aovRT, "Comp:Side")

# or using ezANOVA
library(ez)
aovRT <- ezANOVA(dat, dv=.(RT), wid = .(VP), within = .(Comp, Side),
                 return_aov = TRUE, detailed = TRUE)
aovRT <- aovTable(aovRT)

pesString <- effectsizeValueString(aovRT, "Comp")  # partial eta squared
pesString <- effectsizeValueString(aovRT, "Comp:Side")