I am doing AQA Philosophy as well. The most hard bit is understanding the actual question (for most of my peers), Actually knowing examples and knowing key knowledge but applying that knowledge in order to attain Level 5 or Level 6 (me, and for people who enjoyed a grade B at GCSE English). You definitely require at least 2 hours of research of articles, examples and reading books every week. If you can't match that, the maximum you'd get is probably a D or a C.
I am doing modules different than yours, I am currently doing
.Reason and Experience
.The value of Art
Sorry I didn't actually read your post fully: (Just out of gut feeling)
Rationalism is the concept that every motive is based on reason rather than lets say Religion or Emotions.
Nativism well, has multiple reasons. One of them is related to anti multiculturalism and the other one, Philosophy it means that our abilities are naturally born us. For example, you can take examples from wildlife (animals), and the native americans.