Why do I read something a second time right after I have read it?

(Chapter 16 The Many Problems with Words in my book) This might need to be able to added to Ch. 26 MCI Tool Box

I think that if I reread something it is done on purpose so that it can help me to understand the words better. If I want to try to remember something long enough to write it down, reading it more than once should help me. This is not always guaranteed to work.