There's a great book by Joseph O'Connor called "Introducing NLP: Psychological Skills for Understanding and Influencing People " Which deals a great bit with "framing", as well as other concepts that really open up the understanding of human communication and perception. It was initially intended for psychologists/psychatrists/etc.. (I believe, based on the numerous references to using this in "sessions"), but it is really appropriate for just about every person who wants to understand human communication a little better.