I'm new to Rstudio and the more I try to find out about it, the more I'm confused. So I need to measure the intra-individual differences for one individual over 19 Sessions. Am I even allowed to use ANOVA in this case? I tried it with the aov command in several different ways but I only get error messages.
I would be very thankful, if someone could suggest a tutorial,website or something similar to that, because so far I've only seen examples regarding inter-individual differences.