I'm not sure there's as much relation as it seems at first. For example, According to the Pollyanna principle, the brain processes information that is pleasing and agreeable in a more precise and exact manner as compared to unpleasant information. is completely the opposite of how it works with me. I have positive general impressions of things about which I can only remember negative details. It's like instead of evaluating the experience based on the sum of its parts I just have an inaccurate header label.