My paragraph beginning with “in regards to” is a possible solution to your first question “how would people who do not practice motivated reasoning be found and identified?”
My next statement “perhaps the ledger system I mentioned could be a blockchain system?” is a possible solution to your next question “Is there a more objective way of determining whether motivated reasoning is behind a decision, to counteract the possibility that the “nonpartisan” people may not actually be as unaffected by motivated reasoning as we would hope?” ( I was referring to the ledger system mentioned in the final paragraph of my Checks and Balances writeup. Correct me if I’m wrong, but are blockchains supposed to be unbiased? (https://dailyfintech.com/2018/06/04/blockchain-gives-hope-for-unbiased-news/) ).
You mentioned that I should try the Less Wrong Forum, should I post my whole Checks and Balances writeup there as well, or only ask them about the Harvard Implicit Bias test for motivated reasoning?
Thanks again eaphilosophy for your reply. I will post my write-up to the Less Wrong Forum. I just have one more question for now, are there any organizations out there who are looking for ideas such as this?