It is requested to seniors to shed some light on these issues.
I am aspirant of CE2016 and I am thinking to replace any of the two among Sociology,Journalism and Statistics with Psychology.
I have no formal background in any of these subjects But I have interest in all these 4 subjects . Sociology and Journalism are very theoretical and analytical papers and marking of such papers are mostly subjective, statistics require a lot of practice but on the other hand psychology is scientific paper and I guess one can easily score good marks if his or her concepts are clear.

Please tell me about psychology, does it has huge syllabus and what is the minimum duration of time to cover it for someone like me with no background . and is it true that one can score 140+ with good concepts (I read few chapters on B.A psychology and it was very easy for me to grasp concepts ) .