I am talking about both.
My goal is to create a game where the player controls a swarm of birds. So I need to educate myself on this topic. I know there are some tutorial / articles on the internet but I prefer to read these things from books, as they tend to explain things better and in more depth.
So yes, I would like to learn about the psychology and also simulating that psychology.
EDIT: I don't mind getting one book about the psychology and another book about it simulation.