From the Board Rules,

"Before posting, use the Search function. It is likely that your question or something similar to your question has been asked before. The Search function will allow you to see whether your question has already been addressed."

I would hazard to say that the topic of correlation between IQ/IQ proxies and economic status has been discussed exhaustively of late. Can we please put this recurring theme to rest?

What is to give light must endure burning.