IS there any good reference to study the determinants of perception. I want to read extensively about the determinants of perception.

Many things are still unclear therefore one needs to study the book or any other good reference,

Apart from this I always wonder about the Committee who sets the paper. This question is very frequently asked and a very complex however looks very simple in its outlook. I think committee has not found a good amount of answers among the students therefore they repeatedly asked it for several times in a same fashion without any invention in the question topic.