Your comment about me expecting members to be my unpaid research assistants is unneccessarily snarky as that was never my intention as is quite clear. What I asked for was links to studies which I believed that some members may already have knowledge of. I never asked anyone to do my leg work for me.
It may not be your intention, but it is what naturally happens. You ask, people want to help, so they will go off and look things up for you.