i have appeared for css 2012 and had opted psychology as my optional. My psychology papers went well. Just a friendly advise to people who are active on this thread. In paper you would be pressed for time as 35 min per question is not a lot of time. Therefore, try to curtail the length of your answer. Your attempt is good but you will not be able to write all that detail in 35 mins.

Regards,
Aamir