I believe none of the both subjects are easy or difficult. Both of the subjects are very different compared to eachother and offer different knowledge about there topics. Psychology if you are interested and are always amazed by the magic of mind, behaviour,people and how our body, thoughts,feelings and emotions are all connected to why we do what we do, would be the most loved subject of yours. Political Science is the science of the politics, the people, the Govt, the laws and our country. Since ours is the biggest democracy, I personally feel studying political science as relating something to what I see, listen and get to know about the day-to-day happenings in our country. You need to "feel" the subjects to get to know them at their best. Don't have this concrete thought of just finding out which subject is easy and which is tough or for whom we have to write bigger answers. Go for knowledge, grab most of everything. Change your approach to how you see subjects and how you want to study them. Enjoy these subjects. Personally, atleast this is what I feel Humanities Students are capable of- Loving and Enjoying their subjects. Relating them to their day to day life. So again, psycholgy and political science are neither difficult nor easy.