Investing attitudes: Buffett and bankers

Here's Warren Buffett;  to me he comes across as entirely genuine, and I like his 'minimum threshold' approach. If he can get it, why not others?  The Tyrie report on banking behaviour includes (para 140) a conclusion that the absence of women on trading floors may have contributed to the grotesque excesses.  It makes good sense, but I'd like to see more evidence .   know there's been some research on testosterone levels, but I'd be more interested in empirical studies of decision-making - in banking or elsewhere.
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