Apparently, a study indicates that among adolescents, liberals on average have a higher IQ than conservatives?

There is no way of proving one way or the other. However, I believe there are different types of intelligence. And, just to simplify, I will refer to them as "book smart" and "common sense".

Einstein was, of course, extremely intelligent, but he had a difficult time with day to day life.

Yes, there IS a valid way to find out - and it has been done, and validated, in enough studies to know the answer: liberals have much higher IQs. Note that there are also validated tools for assessing the person's beliefs and rate these beliefs on the political spectrum.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.