Hello Gang,
Thank you so much it all make sense. I still have two small questions.
1 - If I am including age, is the age the sum of ages of the 2 participants a given r corresponds to? Am I also correct in assuming that this summed age needs to be mean-centered across all pairs?
2- In my case I have 3 groups, and not interested in cross-group ISC, am I correct in assuming I can model this with just 2 dummy variables for this?
Best,
Vasco
