Chord Roles/Reputations?

Question

Does there exist literature examining the particular psychological/emotional role/reputation of each chord in a movement? (For example, I am currently infatuated with IVmaj7, which is to say I find myself more and more crafting hooks that depend heavily on this chord, and wish to understand better historic thinking on things like this.)

Answer 1

There probably does exist some literature examining the matter that you have raised. It would likely fall under Music History. Different composers came up with various chords. These various composers had mindsets that differed and were in psychological and emotional places that had an impact on the music that they composed. For further information, you should be able to Google.