I do both. Psychology is lot's of essays (12 markers) and writing and geography is mostly remembering the steps and points and a fair share of essays (15 markers).
Psychology isn't as interesting as everyone thinks it will be. For example, AQA (although the contents similar across all exam boards) new spec psychology was made of 4 topics; research methods (which was really boring), social influence (fairly interesting), memory (okay), and then approaches, which was interesting but now you get to the point you have to learn all the divisions in the brain etc which is a stretch of time.