require(lme4)

bySubj <- read.csv("bySubj.csv")
byItem <- read.csv("byItem.csv")

model.bySubj <- lmer(elNP2 ~ (t1+t2)*lang*cons*group*conflict + (t1+t2||ID) + (t1+t2||ID:lang:cons), bySubj, weights=1/wtsNP2)
model.byItem <- lmer(elNP2 ~ (t1+t2)*lang*cons*group + (t1+t2||Item) + (t1+t2||Item:lang:cons:group), bySubj, weights=1/wtsNP2)