A friend of mine has a book on writing, for fantasy writers I think, that has a chapter on questions to ask a reader to make them a good reader. I believe it talks about the author asking his wife said questions in order to make her a good reader. (IE, she knows what to read for).

I cannot for the life of me remember the book or author, and I'm in the middle of a disagreement with the friend who owns the book so....

Can anyone help me based on this vague description??