One-Way Analysis of Variance
ds = dataset you are currently using.
DV = dependent variable of interest
IV = independent variable of interest
Subject = name of subject number column
XYXY = dummy name for a variable, matrix, or data frame into which you are moving information.
One-way ANOVA: Between-subjects data
XYXY<-aov(DV ~ IV, data=ds)
One-way ANOVA: Within-subjects data
The difference from between-subjects is inclusion of Subject as an error component. This controls for the fact that the same people are being used in both conditions. This is why Subject needs to be factored (see above).
XYXY <-aov(DV ~ IV + Error(Subject / (IV)), data = ds)