You can take pretty much the GCSEs you want when you want to be a psychologist, but you do need to do a double science GCSE (double science psychology), which you probably already ready know, even tho I say this still hope this helped.
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.