I solved the structure part --> Aggregate and restructure in SPSS
Edit: Now I have a single line per subject with rows "RT_mean.0" and "RT_mean.1" with 0 and 1 coding the categories of the nominal variable. What test do I use for comparing them?
I have a data set of a reinforcement learning task. My goal is to analyze the difference between the reaction times of the two categories of a nominal variable. However, my data is currently coded with a lot of trials per participant, where every row corresponds to a trial.
How can I structure...